JMA-5300MkIIsm

JMA-5332-12 

JMA-5322-7/9/6HS 

JMA-5312-6/6HS 

MARINE RADAR 

EQUIPMENT 

FIELD SERVICE 

MANUAL

Index 

Modified February 5, 2009 10:34 

1. System Overview 

1.1 Overview ................................................................................................1-1 

1.2 Scanner Unit ..........................................................................................1-2 

1.3 Display Unit ...........................................................................................1-3 

1.4 Main Function ........................................................................................1-4 

2. System Configulation 

2.1 Configuration .........................................................................................2-1 

2.1.1 Antenna and transmitting power ............................................................. 2-1 

Table 2-1: Antenna and transmitting power ................................................. 2-1 

2.1.2 Radar configuration and ship's mains .................................................... 2-1 

Table 2-2: Radar configuration and ship's mains ........................................ 2-1 

2.2 Power System DIagram ........................................................................2-3 

2.3 Function System Diagram ....................................................................2-6 

2.3.1 Scanner unit .............................................................................................. 2-6 

2.3.2 Display Unit ............................................................................................... 2-9 

2.4 I/O Specification ..................................................................................2-13 

Table 2-3: TB4310 (Used in the connection between the scanner unit.) . 2-13 

Table 2-4: TB4301 (Used in the connection with the ISW unit.) ............... 2-14 

Table 2-5: TB4302 (Connected when outputting radar images to 

external equipment.) .................................................................. 2-15 

Table 2-6: TB4303 (Used in the connection with the external 

equipment.) ................................................................................. 2-16 

2.5 DIP-SW / Jumper Selection ................................................................2-17 

2.5.1 I/F Circuit CMH-2201 ............................................................................... 2-17 

2.5.2 GYRO I/F Unit NCT-59A .......................................................................... 2-19 

2.5.3 Radar Process Circuit CDC-1332 ........................................................... 2-23 

2.5.4 AIS Process Circuit NQA-2103 ............................................................ 2-23 

2.5.5 ARPA/ATA Process Circuit NCA-877WA/877A ..................................... 2-24 

2.5.6 T/R Control Circuit CMC-1205R ............................................................. 2-25 

3. Repair Parts 

3.1 List of repair parts .................................................................................3-1 

3.1.1 Spairs ......................................................................................................... 3-1 

Table 3-1: 7ZXRD0026 (JMA-5312-6/6HS) ..................................................... 3-1 

Table 3-2: 7ZXRD0015 (JMA-5322-7/9/6HS, JMA-5332-12) .......................... 3-1 

3.1.2 Special Parts .............................................................................................. 3-2 

Table 3-3: NKE-2103 (JMA-5312-6/6HS) ....................................................... 3-2 

Table 3-4: NKE-2254 (JMA-5322-7/9/6HS) ..................................................... 3-2 

Table 3-5: NKE-1130 (JMA-5332-12) .............................................................. 3-2

3.1.3 Circuit Block to be Repaired .................................................................... 3-3 

Table 3-6: SCANNER UNIT NKE-2103 (JMA-5312-6/6HS) ............................ 3-3 

Table 3-7: SCANNER UNIT NKE-2254 (JMA-5322-7/9/6HS) ......................... 3-3 

Table 3-8: SCANNER UNIT NKE-1130 (JMA-5332-12) .................................. 3-4 

Table 3-9: DISPLAY UNIT NCD-4530 ............................................................. 3-5 

3.2 Illustrated parts breakdown .................................................................3-6 

Table 3-10: SCANNER UNIT NKE-2103 Parts List (JMA-5312-6/6HS) .......... 3-6 

Table 3-11: SCANNER UNIT NKE-2254 Parts List (JMA-5322-7/9/6HS) ..... 3-10 

Table 3-12: SCANNER UNIT NKE-1130 Parts List (JMA-5332-12) .............. 3-15 

Table 3-13: POWER CONTROL UNIT NQE-3167 Parts List ......................... 3-20 

Table 3-14: RADAR PROCESS UNIT NDC-1417 Parts List .......................... 3-22 

Table 3-15: OPERATION UNIT NCE-5171 Parts List .................................... 3-25 

4. Replacement Procedure 

4.1 Precautions (Scanner Unit) ..................................................................4-1 

4.1.1 Precautions for replacing parts in the scanner unit .............................. 4-1 

4.2 Scanner Unit NKE-1130 (JMA-5332-12) ...............................................4-2 

4.2.1 Remove the cover / NKE-1130 ................................................................. 4-2 

4.2.2 Magnetron replacement (M1555) ............................................................. 4-4 

4.2.3 Motor replacement (MDBW10823) ........................................................... 4-6 

4.2.4 Motor Driver replacement (7EPRD0035, 7EPRD0034) ........................... 4-8 

4.2.5 Motor Driver Fan replacement (7BFRD0002) .......................................... 4-9 

4.2.6 Modulator Unit Fan replacement (7BFRD0002) .................................... 4-10 

4.2.7 Modulation Circuit replacement (CPA-264) .......................................... 4-11 

4.2.8 Modulator Unit replacement (NMA-551-1) ............................................. 4-12 

4.2.9 Power Supply Circuit replacement (CBD-1682A) ................................ 4-13 

4.2.10 T/R Control Circuit replacement (CMC-1205R) ..................................... 4-14 

4.2.11 Relay Filter Circuit replacement (CSC-656) .......................................... 4-15 

4.2.12 Receiver Unit Replacement (NRG-229) ................................................. 4-16 

4.2.13 Encoder replacement (CHT-71A) ........................................................... 4-18 

4.2.14 Brake Control Circuit replacement (CCB-655) ..................................... 4-19 

4.2.15 Brake Circuit replacement (CFA-255) .................................................... 4-21 

4.2.16 Brake Unit replacement (NZR-17) .......................................................... 4-22 

4.2.17 Performance Monitor replacement (NJU-84) ........................................ 4-23 

4.3 Scanner Unit NKE-2254 (JMA-5322-7/9/6HS) ...................................4-24 

4.3.1 Remove the cover / NKE-2254 ............................................................... 4-24 

4.3.2 Magnetron replacement (M1568BS) ...................................................... 4-26 

4.3.3 Motor replacement (7BDRD0044A, 7BDRD0045A) ............................... 4-28 

4.3.4 Motor Control Power Circuit replacement (CBD-1779) ........................ 4-30 

4.3.5 Modulator Circuit replacement (CPA-264) ............................................ 4-31 


4.3.7 Power Supply Circuit replacement (CBD-1682A) ................................. 4-35 


4.3.9 Receiver Unit replacement (NRG-162A) ................................................ 4-38 


4.3.11 Magnetron Fan replacement (7BFRD0002) ........................................... 4-40 

4.3.12 Modulator Unit Fan replacement (7BFRD0002) .................................... 4-42



4.4 Scanner Unit NKE-2103 (JMA-5312-6/6HS) .......................................4-46 


4.4.2 Magnetron replacement (MAF1565N) .................................................... 4-47 

4.4.3 Motor replacement (7BDRD0048) .......................................................... 4-49 


4.4.5 Modulator Circuit replacement (CME-363) ............................................ 4-51 

4.4.6 Power Supply Circuit replacement (CBD-1783) ................................... 4-52 

4.4.7 Receiver Unit replacement (NRG-610) .................................................. 4-53 




4.5 Display Unit : LCD Monitor NWZ-173 ................................................4-58 

4.5.1 Bezel Kit replacement (MPXP43590) ..................................................... 4-58 

4.5.2 LCD Panel replacement (CML-771) ........................................................ 4-60 

4.5.3 Brilliance Control Circuit replacement (CCK-989) ............................... 4-63 

4.5.4 Interface Circuit Board replacement (CMH-2227) ................................ 4-65 

4.5.5 Inverter Circuit replacement (CBF-38) .................................................. 4-67 

4.5.6 Blower Circuit replacement (CBP-173A) ............................................... 4-68 

4.6 Display Unit : Radar Process Unit NDC-1417 ...................................4-69 

4.6.1 Power Supply Circuit (NBD-818A) ......................................................... 4-69 

4.6.2 I/F Unit replacement (NQA-2123) ........................................................... 4-70 

4.6.3 Radar Process Circuit replacement (CDC-1332) .................................. 4-73 

4.6.4 Battery replacement (CR2032) ............................................................... 4-76 

4.6.5 ARPA/ATA Process Circuit replacement (NCA-877WA/877A) ............ 4-78 

4.6.6 AIS Process Circuit replacement (NQA-2103) ...................................... 4-79 

4.6.7 GYRO Interface Unit replacement (NCT-59A) ....................................... 4-81 

4.6.8 GYRO Interface Circuit Fuses replacement (MF51NR-0.5A) ............... 4-83 

4.6.9 Terminal Board replacement (CQD-1937A) .......................................... 4-85 

4.6.10 Radar Process Unit Fan replacement (7BFRD0005) ............................ 4-86 

4.7 Display Unit : Operation Unit NCE-5171 ...........................................4-87 

4.7.1 Oeration Circuit replacement (CCK-979) .............................................. 4-87 

4.7.2 Interface Circuit replacement (CQC-1204) ............................................ 4-88 

4.7.3 Trackball replacement (CCK-1000) ........................................................ 4-90 

5. Updating Programs 

5.1 Main program updating procedures ....................................................5-1 

5.1.1 Required items .......................................................................................... 5-1 

5.1.2 Updating procedures ................................................................................ 5-1 

5.2 AIS processing circuit updating procedure .......................................5-2 


5.2.2 Updating procedure .................................................................................. 5-2 

5.3 Version check procedures ...................................................................5-3

6. Troubleshooting 

6.1 Operation Tests .....................................................................................6-1 

6.1.1 Open the Test Menu (self test) ................................................................. 6-1 

6.1.2 Self-diagnosis function (self test) ........................................................... 6-2 

6.1.3 Display test (Monitor Test) ....................................................................... 6-4 

6.1.4 Operation Unit test (Keyboard Test) ....................................................... 6-4 

6.1.5 Performance Monitor (MON Display) ...................................................... 6-5 

6.1.6 System alarm log display (System Alarm Log) ...................................... 6-6 

6.1.7 System information display (System Information) ................................ 6-6 

6.2 Scanner Unit error messages ..............................................................6-7 

6.2.1 TXRX (SSW Off) ......................................................................................... 6-7 

6.2.2 TXRX (MHV) ............................................................................................... 6-7 

6.2.3 TXRX (Reverse) ......................................................................................... 6-9 

6.2.4 TXRX (Heater) ............................................................................................ 6-9 

6.2.5 TXRX (Video) ........................................................................................... 6-11 

6.2.6 TXRX (Trigger) ......................................................................................... 6-12 

6.2.7 TXRX (Fan1) ............................................................................................. 6-13 

6.2.8 TXRX (Fan2) ............................................................................................. 6-13 

6.2.9 TXRX (AZI) ............................................................................................... 6-14 

6.2.10 TXRX (HL) ................................................................................................ 6-16 

6.2.11 TXRX (Data) ............................................................................................. 6-17 

6.3 Display Unit error messages ..............................................................6-19 

6.3.1 Keyboard (Data), Keyboard (Data2) ....................................................... 6-19 

6.3.2 ISW (Data) ................................................................................................ 6-19 

6.3.3 PROC (Trigger) ........................................................................................ 6-20 

6.3.4 PROC (AZI) ............................................................................................... 6-21 

6.3.5 PROC (HL) ................................................................................................ 6-22 

6.3.6 PROC (Video) ........................................................................................... 6-23 

6.3.7 PROC (INT) ............................................................................................... 6-24 

6.3.8 Fan (LCD) ................................................................................................. 6-25 

6.3.9 TT (Boot) .................................................................................................. 6-25 

6.3.10 ASIC1 to RADAR ..................................................................................... 6-26 

6.3.11 AIS PROC (Data) ...................................................................................... 6-26 

6.3.12 GYRO I/F (Data) ....................................................................................... 6-27 

6.3.13 Battery Low .............................................................................................. 6-27 

6.3.14 Battery Dead ............................................................................................ 6-28 

6.4 Error messages related to external input/output .............................6-29 

6.4.1 GYRO I/F (GYRO) .................................................................................... 6-29 

6.4.2 Heading (Data) ......................................................................................... 6-29 

6.4.3 Position (Data) ......................................................................................... 6-30 

6.4.4 Date (Data) ............................................................................................... 6-31 

6.4.5 GPS (Status) ............................................................................................ 6-32 

6.4.6 Speed (Log) ............................................................................................. 6-32 

6.4.7 Speed (2AXG), Speed (2AXW) ................................................................ 6-33 

6.4.8 Speed (GPS) ............................................................................................ 6-34 

6.4.9 AIS (Data) ................................................................................................. 6-34 

6.4.10 AIS Alarm *** ............................................................................................ 6-35

6.4.11 Depth (Data) ............................................................................................. 6-36 

6.4.12 TEMP. (Data) ............................................................................................ 6-37 

6.4.13 Wind (Data) .............................................................................................. 6-38 

6.4.14 Current (Data) .......................................................................................... 6-39 

6.4.15 ROT (Data) ............................................................................................... 6-40 

6.4.16 RSA (Data) ............................................................................................... 6-41 

6.5 Sample Problems : Internal Circuit ...................................................6-42 

6.5.1 Screen remains dark even when brightness dial turned to maximum 

6-42 

6.5.2 The brightness nonuniformity is visible on the LCD panel at night 

condition ................................................................................................. 6-43 

6.5.3 Screen sometimes shows display and sometimes not ....................... 6-43 

6.5.4 The power can not be turned on ............................................................ 6-44 

6.5.5 Track ball does not move cursor ........................................................... 6-44 

6.5.6 "Scanner Rotating" message displayed, Scanner Unit does not 

stop when transmission stops ............................................................. 6-45 

6.5.7 Display unit layout shown on inter switch menu is mirror image of 

actual layout ........................................................................................... 6-45 

6.5.8 Displayed echo does not match distance / azimuth of actual ship .... 6-45 

6.5.9 Cannot use CompactFlash® card ......................................................... 6-46 

6.5.10 A line appears that you do not remember inputting. ........................... 6-47 

6.5.11 Cannot display initial acquisition mark ................................................ 6-47 

6.6 External equipment .............................................................................6-48 

6.6.1 Cannot connect to external equipment for NMEA output ................... 6-48 

6.6.2 Cannot display true bearing ................................................................... 6-49 

6.6.3 Blurry image on the remote display ...................................................... 6-50 

7. Drawings 

7.1 Outline Drawings ...................................................................................7-1 

Fig.7-1: SCANNER UNIT NKE-1130 (JMA-5332-12) ...................................... 7-1 

Fig.7-2: SCANNER UNIT NKE-2254-7 (JMA-5322-7) ..................................... 7-2 


Fig.7-4: SCANNER UNIT NKE-2254-6HS (JMA-5322-6HS) ........................... 7-4 

Fig.7-5: SCANNER UNIT NKE-2103-6 (JMA-5312-6/6HS) ............................. 7-5 

Fig.7-6: RADAR PROCESS UNIT NDC-1417 .................................................. 7-6 

Fig.7-7: LCD MONITOR NWZ-173 ................................................................... 7-7 

Fig.7-8: LCD MONITOR NWZ-173 with stand MPBC42446 (option) ............ 7-8 

Fig.7-9: OPERATION UNIT NCE-5171 ............................................................ 7-9 

Fig.7-10: 

POWER SUPPLY NBA-5111 (JMA-5332-12 : standard, 

JMA-5322-7/9/6HS, JMA-5312-6/6HS : option) ............................. 7-10 

Fig.7-11: JUNCTION BOX NQE-3151A (JMA-5332-12) .................................. 7-11 

Fig.7-12: INTERSWITCH UNIT NQE-3141-4A (option) .................................. 7-12 


Fig.7-14: POWER CONTROL UNIT NQE-3167 (option) ................................. 7-14 

7.2 General System Diagram ....................................................................7-15 

Fig.7-15: General System Diagram of RADAR, Type JMA-5332-12 ............ 7-15 

Fig.7-16: General System Diagram of RADAR, Type JMA-5322-7/9/6HS ... 7-16 

Fig.7-17: General System Diagram of RADAR, Type JMA-5312-6/6HS ...... 7-17

7.3 Terminal Board Connection Diagram ................................................7-18 

Fig.7-18: Terminal Board Connection Diagram of RADAR, 

Type JMA-5332-12 .......................................................................... 7-18 


Type JMA-5322-7/9/6HS ................................................................. 7-19 


Type JMA-5312-6/6HS .................................................................... 7-20 

7.4 Internal connection Diagram ..............................................................7-21 

Fig.7-21: Internal Connection Diagram of SCANNER UNIT NKE-1130 

(100/100/115V, JMA-5332-12) ......................................................... 7-21 



Fig.7-23: Internal Connection Diagram of SCANNER UNIT 

NKE-2254-7/9/6HS (JMA-5322-7/9/6HS) ........................................ 7-23 


NKE-2103-6/6HS (JMA-5312-6/6HS) .............................................. 7-24 

Fig.7-25: Internal Connection Diagram of RADAR PROCESS UNIT 

NDC-1417 ......................................................................................... 7-25 

Fig.7-26: Internal Connection Diagram of LCD MONITOR NWZ-173 .......... 7-26 

Fig.7-27: Internal Connection Diagram of INTERFACE UNIT NQA-2123 .... 7-27 

Fig.7-28: Internal Connection Diagram of OPERATION UNIT NCE-5171 .... 7-28 

Fig.7-29: Internal Connection Diagram of JUNCTION BOX NQE-3151A 

(JMA-5332-12) ................................................................................. 7-29 

7.5 Circuit Schematic ................................................................................7-30 

Fig.7-30: Circuit Schematic of CQD-1937A ................................................... 7-30 

Fig.7-31: Circuit Schematic of CMH-2201 page 1 ......................................... 7-31 


Fig.7-33: Circuit Schematic of CMH-2201 page 3 ......................................... 7-33

Section 1 

System Overview 

1.1 Overview ................................................................................................1-1 

1.2 Scanner Unit ..........................................................................................1-2 

1.3 Display Unit ...........................................................................................1-3 

1.4 Main Function ........................................................................................1-4

INDEX > 1.System Overview > 1.1 Overview 

1.1 Overview 

This system is a radar system for vessels that complies with the performance 

standards of the International Maritime Organization (IMO). The system consists 

of a scanner unit for transmitting and receiving radio waves, a transmitter-receiver 

unit that generates signals for transmission and amplifies received signals, and a 

display unit that removes unwanted waves and displays the radar image. 

1 

The radio waves transmitted via the system's magnetron transmitter are pulse 

modulated waves in either 3 GHz (S band) or 9.4 GHz (X band). 

In addition to the basic radar functions, the system features a number of functions 

that support maritime safety, such as a radar track display function, a target 

tracking function, and an automatic identification system (AIS) information 

display function. 

1-1

INDEX > 1.System Overview > 1.2 Scanner Unit 

1.2 Scanner Unit 

The transmitter-receiver unit generates radar signals for transmission and 

amplifies and demodulates received signals. It sends the radar video signals it 

obtains to the display unit along with the transmission timing signals and antenna 

rotation signals. 

Three types of transmitter-receiver unit are available, which are suited to different 

uses: 

1) X band 10 kW type: Compact and lightweight 

Fig.1-1: X-10kW Scanner Unit 

2) X band 25 kW type: High resolution, high sensitivity 

Fig.1-2: X-25kW Scanner Unit 

3) S band 30 kW type 1 : All-weather type 

Fig.1-3: S-30kW Scanner Unit 

The X band 25 kW type and the S band 30 kW type are available as either a 2-unit 

type, in which the transmitter-receiver unit is built into the scanner unit, or a 3- 

unit type, which has a separate transmitter-receiver unit to be installed inside the 

cabin. The X band 10 kW type is only available as a 2-unit type. 

1.The S band 30 kW type needs a junction box that supplys AC power to a 

scanner motor. 

1-2

INDEX > 1.System Overview > 1.3 Display Unit 

1.3 Display Unit 

The display unit processes the radar signals it receives from the transmitterreceiver 

unit, removing unwanted waves, and draws and displays radar images for 

the specified observation range. The user stands in front of the display unit to 

operate the radar, using the various switches and the track ball on the operation 

unit, and observes conditions around the vessel from the radar image shown in the 

display. 

1 

The display unit consists of below: 

Fig.1-4: Process unit (NDC-1417) 

Fig.1-5: LCD monitor (NWZ-173) 

Fig.1-6: Operation unit (NCE-5171) 

1-3

INDEX > 1.System Overview > 1.4 Main Function 

1.4 Main Function 

This system provides radar performance in compliance with IMO performance 

standard MSC.192(79), offering the following functions: 

1) Sensitivity adjustment, Sea clutter and rain snow clutter 

suppression 

2) Interference removal 

3) Various navigation tools (cursor, VRM, EBL, parallel line cursor) 

4) Own vessel track display 

5) User map creation and display 

6) Radar track display 

7) Target tracking 

8) AIS information display 

9) Inter switch (option) 

10) Self-diagnosis 

11) Radar performance monitoring (performance monitor) 

1-4

Section 2 

System Configulation 

2.1 Configuration .........................................................................................2-1 

2.1.1 Antenna and transmitting power ............................................................. 2-1 

Table 2-1: Antenna and transmitting power ................................................... 2-1 

2.1.2 Radar configuration and ship's mains .................................................... 2-1 

Table 2-2: Radar configuration and ship's mains .......................................... 2-1 

2.2 Power System DIagram ........................................................................2-3 

2.3 Function System Diagram ....................................................................2-6 

2.3.1 Scanner unit .............................................................................................. 2-6 

2.3.2 Display Unit ............................................................................................... 2-9 

2.4 I/O Specification ..................................................................................2-13 

Table 2-3: TB4310 (Used in the connection between the scanner unit.) ... 2-13 

Table 2-4: TB4301 (Used in the connection with the ISW unit.) ................. 2-14 

Table 2-5: TB4302 (Connected when outputting radar images to external 

equipment.) ................................................................................... 2-15 

Table 2-6: TB4303 (Used in the connection with the external equipment.) 

........................................................................................................ 2-16 

2.5 DIP-SW / Jumper Selection ................................................................2-17 

2.5.1 I/F Circuit CMH-2201 ............................................................................... 2-17

2.5.2 GYRO I/F Unit NCT-59A .......................................................................... 2-19 

2.5.3 Radar Process Circuit CDC-1332 ........................................................... 2-23 

2.5.4 AIS Process Circuit NQA-2103 ............................................................ 2-23 

2.5.5 ARPA/ATA Process Circuit NCA-877WA/877A ..................................... 2-24 

2.5.6 T/R Control Circuit CMC-1205R ............................................................. 2-25

INDEX > 2.System Configulation > 2.1 Configuration 

2.1 Configuration 

2.1.1 Antenna and transmitting power 

Table 2-1: Antenna and transmitting power i 

Radar Model Antenna type Transmitted 

output power 

Band 

Rate of 

rotation 

Category 

2 

JMA-5312-6 6ft slot antenna 10kW X 27rpm CAT 2 

JMA-5312-6HS 6ft slot antenna 10kW X 48rpm CAT 2H 



JMA-5322-6HS 6ft slot antenna 25kW X 48rpm CAT 2H 

JMA-5332-12 12ft slot antenna 30kW S 24rpm CAT 2 

i. The transmission format for all models is P0N. 

2.1.2 Radar configuration and ship's mains 

Table 2-2: Radar configuration and ship's mains 

Model name Scanner unit Performance 

monitor 

Display unit 

Ship's mains 

JMA-5312-6 NKE-2103-6 NJU-85 NCD-4530 24VDC 

JMA-5312-6HS NKE-2103-6HS NJU-85 NCD-4530 24VDC 



JMA-5322-6HS NKE-2254-6HS NJU-85 NCD-4530 24VDC 

JMA-5332-12 NKE-1130 NJU-84 NCD-4530 24VDC 

( use NBA-5111 i ) 

NQE-3151A ii 

i. The JMA-5332-12 needs AC power for the Radar Process Unit (Rectifier Unit NBA-5111). 

ii. Specify 100-115VAC or 220-240VAC 1φ 50/60Hz on the scanner unit specification with order. 

100/110/115VAC 

220/230/240VAC 

1φ,50/60Hz 

2-1

INDEX > 2.System Configulation > 2.1 Configuration 

1) There are two specifications, 100-115 VAC 50/60Hz 1φ and 220- 

240 VAC 50/60Hz 1φ, available for the drive motor for scanner 

unit types NKE-1130. Specify which power source specification 

you require when you place your order. 

2) For scanner unit types NKE-2254/2103, the drive motor is 

compatible with both 100-115 VAC 50/60Hz 1φ and 220-240 VAC 

50/60Hz 1φ, so there is no need to specify a power source 

specification. 

3) As an option, a deicing mechanism (neck heater) is provided for 

scanner units with the letter "D" at the end of the scanner unit 

model name. The neck heater is only available in a 100-115 VAC 

50/60Hz 1φ specification, and it cannot be fitted to the NKE-2103. 

4) The name plates of the various devices appear in English as 

follows: 

Antenna (scanner unit) 

Display unit 

SCANNER UNIT 

DISPLAY UNIT 

5) The DISPLAY UNIT NCD-4530 has a separate structure consisting 

of the following: 

LCD MONITOR UNIT 

CONTROL UNIT 

NWZ-173 

NCM-853 

6) The control unit NCM-853 is consisting of the following 

RADAR PROCESS UNIT 

OPERATION UNIT 

NDC-1417 

NCE-5171 

2-2

INDEX > 2.System Configulation > 2.2 Power System DIagram 

2.2 Power System DIagram 

2 

DC24V 

+30% 

-10% 

PWR 

SENSE 

Filter 

Motor 

Motor 

Control 

Filter 

internal circuit 

power 

AVR 

Filter 

SCANNER UNIT NKE-2103/2254 

RADAR PROCESS UNIT NDC-1417 

P12V 

±12V 

AVR 

F3 

F2 

Relay 

PWR 

CONT 

PWR-ON 

4A 

-12V 0.2A 

+12V 1.0A 

+5V AVR 

+3.3V AVR 

LCD MONITOR 

NWZ-173 

Analog 

Analog 

4A 

Logic 

Poly-SW 

POWER-SW 

Poly-SW 

OPERATION UNIT NCE-5171 

7A 

Logic 

0.5A 

0.5A 

To GPS (SW) 

Fig.2-1: Power System Diagram of RADAR, Type JMA-5312-6/6HS, JMA-5322-7/9/6HS 

2-3


AC100/110/115V 50/60Hz 1φ 

AC220/230/240V 50/60Hz 1φ 

RECTIFIER UNIT 

NBA-5111 

PWR 

SENSE 

DC24V 

Filter 

RADAR PROCESS UNIT NDC-1417 

P12V 

±12V 

AVR 

JUNCTION BOX 

NQE-3151A 

F3 

Relay 

PWR 

CONT 

PWR-ON 

4A 

-12V 0.2A 

+12V 1.0A 

+5V AVR 

Analog 

Analog 

4A 

Logic 

+3.3V AVR 

7A 

Logic 

Poly-SW 

0.5A 

Poly-SW 

0.5A 

Filter 

Motor 

Control 

Motor 

Filter 

AVR 

internal circuit 

power 

SCANNER UNIT NKE-1130 

LCD MONITOR 

NWZ-173 

POWER-SW 

OPERATION UNIT NCE-5171 

To GPS (SW) 

Fig.2-2: Power System Diagram of RADAR, Type JMA-5332-12 

2-4


The electrical schematic diagram for the system is shown in Fig.2-1, Fig.2-2. 

The ship's DC power supply is input via a line filter on I/F circuit CMH2201 and 

a circuit breaker to power supply circuit CBD-1665A, generating the required 

voltage. Each power supply circuit is a highly efficient switching power supply 

circuit. 

The system is equipped with overvoltage protection. If the input voltage exceeds 

DC42V, power supply circuit CBD-1665A cuts power supply and if the input 

voltage exceeds DC50V, the circuit breaker trips to prevent the excessive voltage 

from being applied to the system. The setting for the input voltage is made on the 

power supply circuit CBD-1665A. 

2 

The +12Vp power supply operates even when the operating unit is turned off. 

This power supply is used in functions such as the control circuit of the power 

supply circuit and the inter switch control function. 

When the power switch of the operating unit is turned on, the power supply used 

in the system is activated and outputs power at the following voltages: +5V/ 

+3.3V/+12V/-12V/monitor power, then the system starts. The +5V/+3.3V 

voltages are used primarily by the control circuit ICs. The +12V/-12V voltages are 

primarily used in the external interface circuit. 

The power supply output relay for the scanner are turned on and off independently 

of the power for the system itself. When the scanner unit power on control signal 

is input from the inter switch unit from the inter switch function, the power supply 

output relay for the scanner come on. Where the inter switch function is not used, 

these actions are linked to the power switch of the operating unit. 

Each power supply output has output over current protection, so that if there is a 

short circuit of the load or the rated output is exceeded, protective functions are 

activated and shut down the output. 

2-5

INDEX > 2.System Configulation > 2.3 Function System Diagram 

2.3 Function System Diagram 

2.3.1 Scanner unit 

SLOT ANTENNA 

Scanner Unit 

NKE-2103/2254 

MOTOR 

B101 

ROTARY 

JOINT 

ENCODER 

ΦA,ΦB,ΦZ 

FILTER 

MAG 

V101 

DIODE 

LIMITER 

PULSE 

TRANS 

SWITCHING 

CIRCUIT 

PC 201 

DUMMY 

LOAD 

Tx Trigger/Pulse Width 

Tune Control 

Receiver 

Bandwidth 

Control 

MIC( 2103) 

or 

RF AMP 

( 2254) 

IF AMP 

MH 

GENERATOR 

VIDEO 

AMP 

POWER 

SUPPLY 

CIRCUIT 

AVR 

INTERFACE CIRCUIT 

PC 1001 

DC +24V 

Speed control 

MOTOR CONTROL 

POWER 

PC1501 

Rotation Control 

Status 

SAFETY SWITCH 

S101 

BP/BZ 

VD 

TI 

MTR+/- 

Fig.2-3: Function Block Diagram of Scanner unit, Type NKE-2103/2254 

2-6


SLOT ANTENNA 

Scanner Unit 

NKE-1130 

ERROR 

MOTOR 

B101 

MOTOR 

DRIVER 

PC1501 

ROTARY 

JOINT 

FILTER 

ENCODER 

ΦA, ΦB,ΦZ 

2 

MAG 

V101 

DIODE 

LIMITER 

PULSE 

TRANS 

SWITCHING 

CIRCUIT 

PC201 

DUMMY 

LOAD 

Tune Control 

Receiver 

Bandwidth 

Control 

RECEIVER 

RF AMP 

IF AMP 


MH 

GENERATOR 

VIDEO 

AMP 

POWER 

SUPPLY 

CIRCUIT 

AVR 


PC1101 

MOTOR RELAY 

PC1201 

PC 1001 

Relay Control 

Status 

SAFETY SWITCH 

S101 

Fig.2-4: Function Block Diagram of Scanner unit, Type NKE-1130 

Fig.2-3, Fig.2-4 shows the function system diagram for the scanner unit. 

When the power supply in the display unit starts, the power supply circuit in the 

scanner unit activates and power is supplied to the circuits in the scanner unit. 

Once the power supply starts, the CPU in the interface circuit starts and perform 

initial settings. Then the preheating of the magnetron begins, and the scanner unit 

waits for a communication signal to be sent from the display unit. When it 

receives the communication signal from the display unit, a communication link is 

established, and the scanner unit is subsequently controlled from the display unit. 

While the magnetron is preheating, the interface circuit sets the operation of the 

various circuits in the scanner unit according to the initial setting values it receives 

from the display unit. When the preheating is complete, the scanner unit notifies 

the display unit. When the user performs the operation to start transmission, the 

display unit sends the transmission start command via the communication line and 

the scanner unit starts the rotation of the antenna motor and begins transmission. 

2-7


A transmission timing pulse is generated in the interface circuit, which is input to 

the modulator switching circuit for high voltage switching. The pulse transformer 

further increases the voltage of the high-voltage pulse, and the high voltage is 

applied to the magnetron. In this way, pulse-modulated microwaves are obtained. 

The pulse width and the pulse-repetition frequency are specified by means of 

control commands from the display unit. 

The radar wave passes through a duplexer circuit that uses a circulator and then 

through a rotary joint, before being transmitted into the air from the antenna. 

A signal reflected from a target is input from the antenna to the receiving block 

using the duplexer function. The received signal is amplified before being 

converted to the IF frequency, after which logarithmic detection is performed and 

the signal becomes a radar video signal. If the receiving tuning function is set to 

the auto mode, the interface circuit processes the received signal and 

automatically controls the tuning voltage so as to match the optimum local 

frequency. 

When the interface circuit turns on the scanner unit relay, DC power is supplied to 

the motor driver circuit and the antenna motor rotates. If the safety switch is off, 

the power supplied to the motor driver is forcibly shut off, stopping the rotation of 

the antenna motor. The beam azimuth of the antenna is detected by the encoder. 

When the radiator is subjected to external force of wind (corresponding wind 

speed is greater than 51.5m/s) that exceed the ability to drive the scanner unit, the 

scanner unit stop to drive the motor. Because a built-in overload protection circuit 

is activated. If the scanner unit rotates by the wind in a counterclockwise 

direction, the TXRX[Reverse] alarm will be appeared, and stop to transmit. If the 

scanner unit rotates by the wind in a clockwise direction, the scanner unit stop to 

drive the motor. Therefore the TXRX[AZI] alarm will be appeared when the wind 

is calm down. 

When the corresponding wind speed is less than or equal to 51.5m/s, the break 

circuit (in the scanner unit) can reduce the scanner rotation speed to 11rpm less 

than, therefore the radar can transmit normally. 

2-8


2.3.2 Display Unit 

Operation Unit NCE-5171 LCD Monitor NWZ-173 

GAIN 

MULTI RAIN SEA 

19inch LCD 

Encoder 

EBL VRM 

Key Matrix 

+1 2 V 

I/F 

P1 2 V 

+1 2 V 

BGR 

RS422 

I/F 

Radar Draw ASIC 

subti 23 

b 

2 

SLOT ANTENNA 

Scanner Unit 

NKE-2103/2254 

MOTOR 

B101 

ROTARY 

JOINT 

ENCODER 

ΦA,ΦB,ΦZ 

FILTER 

MAG 

V101 

DIODE 

LIMITER 

PULSE 

TRANS 

DUMMY 

LOAD 

Tune Control 

SWITCHING 

Receiver 

CIRCUIT 

Bandwidth 

PC201 

Control 

IF AMP 


VIDEO 

MH 

GENERATOR 

AMP 


POWER 

SUPPLY AVR 

CIRCUIT 

PC1001 


Status 

DC+24V 

Speed control 

MOTOR CONTROL 

POWER 

PC1501 

SAFETY SWITCH 

S101 

Relay 

Filter 

Power 

Supply 

NMEA 

I/F 

NMEA 

I/F 

NMEA 

I/F 

NMEA 

NAV1 

I/F 

Radar Process Unit NDC-1417 

TrackBall 

Buzzer 

PWR 

SW 

ADC 

SEL 

CPU 

Graphics ASIC 

Scan convert 

Map draw 

Scan correlation 

Analog RGB External 

Graphics draw 

Trail process 

Display 

ARPA 

DSP 

RS422 

I/F 

Signal Proc ASIC 

Frame memory 

STC/FTC/CFAR 

IR/AVE/GZ alarm 

Sweep 

memory 

Frame memory 

Sub 

CPU 

Main CPU 

Communication 

User I/F 

Main control 

SIO 

SIO 

SIO 

OPTION 

SIO 

Radar Echo 

Map 

Radar Trails 

Graphics 

CPU DDR SDRAM FROM 

SRAM 

AIS work program Back-up 

OPTION 

ISW unit 

P B Z/B 

DV 

I T 

R T M / + - 

TNCR WP 

P12V 

+12V 

-12V 

+5V 

+3.3V 

OPTION 

ISW 

SEL 

RS485 

I/F 

PWRCNT 

+12V 

MTR+/- 

NOTE: Performance monitor, ARPA/ATA 

Process Unit, AIS Process Unit and 

GYRO Interface Unit must be fitted on 

ships compliant to IMO. 

MIC(2103) 

or 

RF AMP 

(2254) 

BP/BZ 

VD 

TI 

MTR+/- 

PWRCNT 

DC24V 

-10% 

+30% 

GYRO 

GYRO 

LOG 

I/F 

SEL 

GPS 

NMEA 

COMPASS 

I/F 

GPS 

PC 

NAV2 

Fig.2-5: Function system diagram of display unit, Type JMA-5312-6/6HS, JMA-5322-7/9/6HS 

2-9


MULTI RAIN SEA 

32bit bus 

SLOT ANTENNA 

Scanner Unit 

NKE-2103/2254 

MOTOR 

B101 

ROTARY 

JOINT 

ENCODER 

ΦA,ΦB,ΦZ 

FILTER 

MAG 

V101 

DIODE 

LIMITER 

PULSE 

TRANS 

SWITCHING 

CIRCUIT 

PC201 

DUMMY 

LOAD 


Tune Control 

Receiver 

Bandwidth 

Control 

IF AMP 

MH 

GENERATOR 

VIDEO 

AMP 

POWER 

SUPPLY 

CIRCUIT 


AVR 

PC1001 

DC+24V 

Speed control 

MOTOR CONTROL 

POWER 

PC1501 


Status 

SAFETY SWITCH 

S101 

Relay 

Filter 

Power 

Supply 

GYRO 

I/F 

NMEA 

I/F 

NMEA 

I/F 

NMEA 

I/F 

NMEA 

I/F 

NMEA 

I/F 

ISW unit 

TrackBall 

Buzzer 

PWR 

SW 

CPU 

RS422 

I/F 

Signal Proc ASIC 

STC/FTC/CFAR 

IR/AVE/GZ alarm 

GAIN 

Encoder 

Key Matrix 

EBL VRM 

Radar Draw ASIC 

Scan convert 

Scan correlation 

Trail process 

Graphics ASIC 

Map draw 

Graphics draw 

Main CPU 

Communication 

User I/F 

Main control 

BP/BZ 

VD 

TI 

MTR+/- 

PWRCNT 

P12V 

+12V 

-12V 

+5V 

+3.3V 

OPTION 

SEL 

+12V 

ISW 

SEL 

RS485 

I/F 

PWRCNT 

ADC 

SEL 

Sweep 

memory 

MTR+/- 

Sub 

CPU 

SIO 

SIO 

SIO 

SIO 

Operation Unit NCE-5171 LCD Monitor NWZ-173 

19inch LCD 

I/F 

RGB 

P12V 

+12V 

+12V 

MIC(2103) 

or 

RF AMP 

(2254) 

BP/BZ 

VD 

TI 

MTR+/- 

PWRCNT 

DC24V 

-10% 

+50% 

GYRO 

LOG 

GPS 

COMPASS 

GPS 

PC 

NAV2 

NAV1 

Radar Process Unit NDC-1417 

RS422 

I/F 

Analog RGB External 

Display 

ARPA 

DSP 

OPTION 

Frame memory 

Frame memory 

Radar Echo 

Radar Trails 

Map 

Graphics 

CPU 

AIS 

DDR SDRAM 

work 

FROM 

program 

SRAM 

Back-up 

OPTION 

Fig.2-6: Function system diagram of display unit, Type JMA-5332-12 

2-10


The functional system diagram of the system's display unit is shown in Fig.2-6. 

A. Starting the System 

Turning on the power switch of the operating unit starts the power supply circuit 

CBD-1655A, and the various power supply voltages are supplied to the I/F circuit 

CMH-2201 and to the radar process circuits. The CPUs in the display unit also 

start and perform the initial settings. 

2 

After the power is turned on, the local CPU in the radar process circuit CDC- 

1332, the graphic CPU, the CPU in the AIS processing circuit CDC-1325 and the 

operation CPU in the operation circuit CCK-979 are released from their reset 

status, perform the initialization of the respective hardware items to which they 

are connected, and wait for control commands from the main CPU. 

The main CPU is released from the reset status and initializes the radar image/ 

display function before initializing the entire system. First, it send initial settings 

commands to the local CPU to initialize the radar signal settings, and it sends a 

communication initialization command to the operating unit CPU to initialize the 

operation functions. The main CPU also writes a program to the memory in the 

DSP of the ARPA process circuit to start the DSP and issue an initialization 

command to the CPU in the AIS process circuit to initialize the AIS process 

circuit. 

After that, the main CPU sets the internal status according to the sensor data input 

from the various communication lines, such as the GYRO I/F and GPS, and issues 

an initialization command to the scanner unit via the communication line to 

initialize the scanner unit. This concludes the initialization of the system. 

B. Circuit Functions 

TThe GYRO I/F unit NCT-59A processes the gyro signal, which is in the synchro 

or step format, calculates the true azimuth, and sends the true azimuth data to the 

radar process circuit at regular intervals using serial communication. As long as 

the GYRO I/F unit is receiving the gyro signal, it is supplied with power and the 

CPU operates even if the display unit power is turned off. Therefore, even if the 

display unit power is turned off, the GYRO I/F circuit can continue to calculate 

the true azimuth. 

The operating circuit CPU detects the operating status of the switches and dials of 

the operation panel and sends the operation data to the main CPU through the 

communication line. 

The radar signal process circuit in the radar process circuit digitalizes the radar 

signals it receives from the scanner unit (the radar video signal, the transmission 

timing signal, and the antenna rotation signal), suppresses unwanted waves, and 

draws and displays a radar image in accordance with the display screen. 

2-11


The ARPA process circuit receives the radar signal data, with the unwanted waves 

suppressed by the radar signal process circuit, and performs target tracking. The 

results of the tracking are sent to the main CPU in the radar process circuit. 

The AIS process circuit processes the AIS communication data input from an 

external device, manages the database of all the AIS targets received, and send the 

information on important targets to the main CPU. Based on this information, the 

main CPU displays the AIS targets and necessary information on the radar screen. 

The I/F circuit contains a built-in interface circuit for the external equipment, 

performs level conversion for the various signals, and connects to the radar 

process circuit. 

The terminal board circuit is an interface between the I/F circuit and external 

device. 

C. Basic Radar Operations 

When the preheating of the magnetron of the scanner unit is complete, the display 

unit goes on standby. Pressing the TX/STBY button on the operation unit places 

the system in transmission status. The main CPU issues a start transmission 

command to the scanner unit, the scanner unit starts transmitting, and the antenna 

starts to rotate. 

The radar signals sent by the scanner unit are input to the radar process circuit via 

the I/F circuit. Unwanted waves are suppressed and a radar image suited to the 

display screen is displayed. 

The switches and dials on the operation unit can be used to change the settings of 

the signal processing in the radar process circuit and the screen display, the results 

of which are immediately reflected in the radar image display. 

D. Inter Switch Function 

The inter switch NQE-3141 allows the user to freely switch the connections 

between multiple display units and the scanner unit, so that even if there is a 

problem with one display unit, the operation of the system as a whole is 

maintained. For example, without the inter switch function, if a problem occurred 

in the No.1 (S band) display unit, it would become impossible to use the S band 

radar, which would affect maritime safety in adverse weather conditions. With the 

inter switch function, however, it is possible to connect the functioning No. 1 

scanner unit to the No. 2 display unit, and continue to use S band radar. The inter 

switch is easily operated from the radar screen. 

The main CPU of the radar process circuit automatically detects, when the system 

is started, whether or not there is an inter switch. If there is, it operates in the inter 

switch mode. If there is no inter switch, or if the inter switch or its cable is 

damaged, preventing the inter switch from being detected, the main CPU 

automatically operates in the standalone mode. 

2-12

INDEX > 2.System Configulation > 2.4 I/O Specification 

2.4 I/O Specification 

This section explains the signals connected to the terminal board circuit CQD- 

1937A. 

2 

Table 2-3: TB4310 (Used in the connection between the scanner unit.) 

PIN NAME DESCRIPTION APPLICATION 

1 MOTOR- TXRX 

2 MOTOR- 

3 TRX- 

4 MOTOR+ 

5 MOTOR+ 

6 TRX+ 

7 GND 

8 +12V 

9 MTR- RS485 

10 MTR+ RS485 

11 BZE 

12 BZ 470Ω pull-up 

13 BPE 

14 BP 470Ω pull-up 

15 TRGE 

16 TRG 180Ω input 

17 VDE 

18 VD 50Ω input 

2-13


Table 2-4: TB4301 (Used in the connection with the ISW unit.) 


1 PWRIN- ISW 

2 PWRIN+ 

3 PWROUT- 

4 PWROUT+ 

5 VDINE 

6 VDIN 50Ω input 

7 VDOUTE 

8 VDOUT 50Ω output 

9 TRGINE 

10 TRGIN 180Ω input 

11 TRGOUTE 

12 TRGOUT +5V push-pull output 

13 BPINE 

14 BPIN 470Ω pull-up 

15 BPOUTE 

16 BPOUT Open-collector output 

17 BZINE 

18 BZIN 470Ω pull-up 

19 BZOUTE 

20 BZOUT Open-collector output 

21 MTRINE GND 

22 MTRIN- RS485 

23 MTRIN+ RS485 

24 MTROUTE GND 

25 MTROUT- RS485 

26 MTROUT+ RS485 

2-14


Table 2-5: TB4302 

(Connected when outputting radar images to external equipment.) 


1 RBVDE RADAR BUOY 

2 RBVD 180Ω input 

3 TRGOE RADAR 

2 

4 TRGO +5V push-pull output 

5 BPOE 

(SLAVE) 

6 BPO Open-collector output 

7 BZOE 

8 BZO Open-collector output 

9 VDOE 

10 VDO 50Ω output 

2-15


Table 2-6: TB4303 (Used in the connection with the external equipment.) 


1 NAV1TXDE GND AIS 

2 NAV1TXD- IEC61162-1/2 output 

3 NAV1TXD+ 

4 NAV1RXDE GND 

5 NAV1RXD- IEC61162-1/2 input 

6 NAV1RXD+ 

7 GPSTXD- IEC61162-1 output GPS 

8 GPSTXD+ 

9 GPSRXD- IEC61162-1 input 

10 GPSRXD+ 

11 NAV2RXD- IEC61162-1 input LOG 

12 NAV2RXD+ 

13 ARPATXD- IEC61162-1/2 output TT 

14 ARPATXD+ 

15 ARPAALM- dry contact (N.C.) 

output 

16 ARPAALM+ 

17 SYSALM- dry contact (N.C.) 

output 

18 SYSALM+ 

ALARM 

SYSTEM 

19 EVENT- GND 

20 EVENT+ 220Ω pull-up input 

21 HDGRXD- IEC61162-1/2 input HEADING 

22 HDGRXD+ 

SENSOR 

2-16

INDEX > 2.System Configulation > 2.5 DIP-SW / Jumper Selection 

2.5 DIP-SW / Jumper Selection 

2.5.1 I/F Circuit CMH-2201 

Jumper settings 

Jumper posts are mounted at 

the locations shown in the figure 

to the right. 

2 

1) JP401,JP404 

ISW operation mode switching 

1-2: ISW enable 

2-3: ISW automatic recognition 

(factory default) 

OPEN: ISW disable 

JP404 

JP401 

2) JP402 

Contact signal(SYSALM) output 

polarity switching 

1-2: NORMALY OPEN 

2-3: NORMALY CLOSE 

3) JP403 


Contact signal(ARPAALM) output 

polarity switching 

JP402 

JP403 

JP405 

JP406 

1-2: NORMALY OPEN 

2-3: NORMALY CLOSE 


Fig.2-7: CQD-2097 Jumpers 

2-17


4) JP405, JP406 

J8(DSUB-9P) output switching 

1-2: RS232C (factory default) 

2-3: RS422 

By switching the position of the jumper plug, it is possible to output transmitted and 

received signals level RS232C or RS422 from the J8 (DSUB-9P). PIN configuration is 

bellow. 

PIN RS232C 

1 RESERVE i 

RS422 

RXD- 

2 RXD RXD+ 

3 TXD TXD+ 

4 RESERVE i TXD- 

5 GND GND 

6 NC NC 

7 RESERVE i RESERVE i 

8 RESERVE i RESERVE i 

9 NC NC 

i. Do not connect to external device 

2-18


2.5.2 GYRO I/F Unit NCT-59A 

DIP-SW/jumper selection 

2 

Fig.2-8: NCT-59A DIPSW 

1) TB100 

Not used. To be kept at the factory default setting, alteration prohibited. 

2) TB105 

Gyro input low voltage. 

1-2: Normal setting (factory default setting) 

2-3: Gyro low voltage (CD56 lights at 22 Vdc or less. However, the gyro I/ 

F circuit of the JMA-5300MK2 operates on power supplied from the 

display unit even when the display unit is turned off. Thus, there is no 

particular need to switch (although it will still operate if it is switched). 

It is necessary to switch if using the JMA-5300.) 

3) TB106, TB107, TB108, TB109 

unmounted 

4) TB401-403 

1-2: Normal setting (factory default setting) 

2-19


5) S5 setting 

S5 SETTING TABLE 1 2 3 4 5 6 7 8 

STEP 

ON 

SYNC 

OFF 

ジャイロ信号 

GYRO SIGNAL 

360X OFF OFF 

180X ON OFF 

90X OFF ON 

36X ON ON 

回転方向正 /NOR OFF 

DIRECTION 逆 /REV ON 

タイプパルス/PULSE 

OFF 

TYPE シンクロ/SYNC ON 

ログ信号 

LOG SIGNAL 

パルス/ 浬 

PULSE/NM 

Don’t care 

OFF 

800P/360X 

OFF OFF 

400P/180X ON OFF 

200P/90X 

OFF ON 

100P/30X ON ON 

2-20


6) S4 setting 

S4 SETTING TABLE 1 2 3 4 5 6 7 8 

LOG ALARM 

GYRO SIMULATOR 

ON 

OFF 

ON 

OFF 

2 

その他の設定 

OTHER SETTING 

ON 

LOG SIMULATOR 

OFF 

N.C. Don't care any 

GYRO ALARM TIME 

5s 

ON 

0.5s OFF 

HEADING SENSOR NMEA(HDT/THS) 

ON 

SOURCE GYRO SIGNAL OFF 

4800 OFF OFF 

NMEA 

SETTING 

BAUDRATE 

9600 ON OFF 

19200 OFF ON 

38400 ON ON 

7) S6 Reset switch 

Resets the CPU. 

8) S7 Zero degrees setting switch 

Sets the azimuth at the moment the switch is pressed to due North. 

9) S2, S3 Gyro type switching 

Left: STEP 

Right: SYNC 

10) S1 Gyro ON / OFF switch 

Left: OFF 

Right: ON 

11) S10 Other settings 

Not used. Set all settings to OFF. 

2-21


LED 

Fig.2-9: NCT-59A LED 

2-22


2.5.3 Radar Process Circuit CDC-1332 

1) S301 

A 4-bit DIP-SW. Do not alter the 

factory default setting shown below. 

1: ON(alteration prohibited) 

2: ON(alteration prohibited) 

3: OFF(alteration prohibited) 


S300 

S301 

2 

2) S300 

A 6-bit DIP-SW. The factory default 

settings are all OFF. Do not alter the 

settings. 







Fig.2-10: CDC-1332 DIPSW 

2.5.4 AIS Process Circuit NQA-2103 

1) S300 

A 4-bit DIP-SW. Do not alter 

the factory default settings 

shown below. 





Fig.2-11: NQA-2103 DIPSW 

2-23


2.5.5 ARPA/ATA Process Circuit NCA-877WA/877A 

1) S1,S2 

Two 6-bit DIP-SW. Do 

not alter the factory 

default settings shown 

below. 

Fig.2-12: NCA-877WA/877A DIPSW 

S1 

S2 

1: OFF(alteration prohibited) 1: ON(alteration prohibited) 

2: OFF(alteration prohibited) 2: ON(alteration prohibited) 

3: ON(alteration prohibited) 3: OFF(alteration prohibited) 



6: OFF(alteration prohibited) 6: OFF(alteration prohibited) 

2-24


2.5.6 T/R Control Circuit CMC-1205R 

1) NKE-2254 (25kW, X-band, 2unit-type scanner) 

Jumper setting 

Dip-switch setting 

SW2 

SW1 

3 2 1 3 2 1 ON 

ON 

SHORT PLUG 

1 2 3 4 5 6 7 8 

1 2 

2 

J92,J93,J95,J96 : short 1-2 

J97 : オープン 

2) NKE-2254-HS (25kW, X-band, 2unit-type scanner, High-speed 

motor) 



SW2 

SW1 

3 2 1 3 2 1 

ON 

ON 

SHORT PLUG 

1 2 3 4 5 6 7 8 

1 2 

J92,J93,J95,J96 : short 1-2 

J97 : open 

3) NKE-1130 (30kW,S-band, 2unit-type scanner) 



SW2 

SW1 

3 2 1 3 2 1 ON 

ON 

SHORT PLUG 

1 2 3 4 5 6 7 8 

1 2 

J92,J93,J95,J96 : short 1-2 

J97 : open 

2-25


2-26

Section 3 

Repair Parts 

3.1 List of repair parts .................................................................................3-1 

3.1.1 Spairs ......................................................................................................... 3-1 

Table 3-1: 7ZXRD0026 (JMA-5312-6/6HS) ....................................................... 3-1 

Table 3-2: 7ZXRD0015 (JMA-5322-7/9/6HS, JMA-5332-12) ............................ 3-1 

3.1.2 Special Parts .............................................................................................. 3-2 

Table 3-3: NKE-2103 (JMA-5312-6/6HS) ......................................................... 3-2 

Table 3-4: NKE-2254 (JMA-5322-7/9/6HS) ....................................................... 3-2 

Table 3-5: NKE-1130 (JMA-5332-12) ................................................................ 3-2 

3.1.3 Circuit Block to be Repaired .................................................................... 3-3 

Table 3-6: SCANNER UNIT NKE-2103 (JMA-5312-6/6HS) .............................. 3-3 

Table 3-7: SCANNER UNIT NKE-2254 (JMA-5322-7/9/6HS) ........................... 3-3 

Table 3-8: SCANNER UNIT NKE-1130 (JMA-5332-12) .................................... 3-4 

Table 3-9: DISPLAY UNIT NCD-4530 ............................................................... 3-5 

3.2 Illustrated parts breakdown .................................................................3-6 

Table 3-10: SCANNER UNIT NKE-2103 Parts List (JMA-5312-6/6HS) ............ 3-6 

Table 3-11: SCANNER UNIT NKE-2254 Parts List (JMA-5322-7/9/6HS) ....... 3-10 

Table 3-12: SCANNER UNIT NKE-1130 Parts List (JMA-5332-12) ................ 3-15 

Table 3-13: POWER CONTROL UNIT NQE-3167 Parts List ........................... 3-20 

Table 3-14: RADAR PROCESS UNIT NDC-1417 Parts List ............................ 3-22 

Table 3-15: OPERATION UNIT NCE-5171 Parts List ...................................... 3-25

INDEX > 3.Repair Parts > 3.1 List of repair parts 

3.1 List of repair parts 

3.1.1 Spairs 

Table 3-1: 7ZXRD0026 (JMA-5312-6/6HS) 

Name Type(Code) Shape (mm) In 

use 

FUSE 

ST4-5AN1 

(5ZFCA00050) 

31.8 

Φ6.35 

Spair 

Parts 

No. 

Location 

1 3 F2 INSIDE PROCESS 

UNIT 

3 

FUSE 

ST6-10AN1 


(5ZFCA00053) 

Φ6.35 

UNIT 

31.8 

Table 3-2: 7ZXRD0015 (JMA-5322-7/9/6HS, JMA-5332-12) 

Name Type(Code) Shape (mm) In 

use 

Spair 

Parts 

No. 

Location 

FUSE 

ST6-10AN1 


(5ZFCA00053) 

Φ6.35 

UNIT 

31.8 

FUSE 

ST6-10AN1 


(5ZFCA00053) 

Φ6.35 

UNIT 

31.8 

3-1


3.1.2 Special Parts 

Table 3-3: NKE-2103 (JMA-5312-6/6HS) 

Parts No. Name Type Manufacture Location Code 

V101 MAGNETRON MAF1565N I 

NJRC 

SCANNER 

UNIT 

5VMAA00102 

A101/A102 CIRCULATOR FCX68R ORIENT 

MICROWAVE 

SCANNER 

UNIT 

5AJRD00001 

A103 DUMMY NJC4002 NJRC SCANNER 

A104 FILTER NJC9952 NJRC SCANNER 

A301 DIODE LIMITER NJS6930 NJRC SCANNER 

UNIT 

UNIT 

UNIT 

5ANDF00001 

5AWAX00002 

5ATBT00006 

i. Use a genuine magnetron. 

Table 3-4: NKE-2254 (JMA-5322-7/9/6HS) 


V101 MAGNETRON M1568BS I 

NJRC 

SCANNER 

UNIT 

5VMAA00106 

A101/A102 CIRCULATOR NJC3901M NJRC SCANNER 

A103 DUMMY NJC4002 NJRC SCANNER 

A104 FILTER NJC9952 NJRC SCANNER 


UNIT 

UNIT 

UNIT 

UNIT 

5AJBV00007 

5ANDF00001 

5AWAX00002 

5ATBT00006 


Table 3-5: NKE-1130 (JMA-5332-12) 


V101 MAGNETRON M1555 I 

NJRC 

SCANNER 

UNIT 

5VMAA00104 

A101 CIRCULATOR NJC3316 NJRC SCANNER 


UNIT 

UNIT 

5AJBV00008 

5ATBT00005 


3-2


3.1.3 Circuit Block to be Repaired 

Table 3-6: SCANNER UNIT NKE-2103 (JMA-5312-6/6HS) 

Location Circuit Block Type Remarks 

SCANNER UNIT GEARED MOTOR 7BDRD0048 DC BRUSHLESS MOTOR 

(COMMON WITH HS) 

SCANNER UNIT MODULATOR CIRCUIT CME-363 EXCLUDING MAGNETRON 

SCANNER UNIT RECEIVER UNIT NRG-610 INCLUDING CAE-529 

SCANNER UNIT POWER SUPPLY CIRCUIT CBD-1783 

SCANNER UNIT BRAKE CIRCUIT CFA-252 

3 

SCANNER UNIT ENCODER CHT-71A 

SCANNER UNIT 

MOTOR CONTROL POWER 

SUPPLY 

CBD-1779 

SCANNER UNIT PERFORMANCE MONITOR NJU-85 

Table 3-7: SCANNER UNIT NKE-2254 (JMA-5322-7/9/6HS) 


SCANNER UNIT GEARED MOTOR 7BDRD0044A DC BRUSHLESS MOTOR 

SCANNER UNIT GEARED MOTOR 7BDRD0045A DC BRUSHLESS MOTOR (HS) 


SCANNER UNIT MOTOR DRIVER CIRCUIT CBD-1779 



SCANNER UNIT HEATER CONTROL PART CHG-216 OPTION 

SCANNER UNIT POWER SUPPLY CIRCUIT CBD-1682A 

SCANNER UNIT T/R CONTROL CIRCUIT CMC-1205R 

SCANNER UNIT MODULATOR UNIT NMA-550-1 EXCLUDING MAGNETRON 

SCANNER UNIT MODULATOR CIRCUIT CPA-264 

SCANNER UNIT RECEIVER UNIT NRG-162A INCLUDING CMA-866A 

SCANNER UNIT FAN 7BFRD0002 

3-3


Table 3-8: SCANNER UNIT NKE-1130 (JMA-5332-12) 


SCANNER UNIT GEARED MOTOR MDBW10823 FOR 100/220 VAC 


SCANNER UNIT MOTOR DRIVER CIRCUIT 7EPRD0034 FOR 220 VAC 

SCANNER UNIT MOTOR DRIVER CIRCUIT 7EPRD0035 FOR 100 VAC 


SCANNER UNIT BRAKE CONTROL CIRCUIT CCB-655 

SCANNER UNIT BRAKE UNIT NZR-17 INCLUDING CFA-261/262 


SCANNER UNIT HEATER CONTROL PART CHG-215 OPTION 

SCANNER UNIT T/R CONTROL CIRCUIT CMC-1205R 

SCANNER UNIT MODULATOR UNIT NMA-551-1 EXCLUDING MAGNETRON 

SCANNER UNIT MODULATOR CIRCUIT CPA-264 

SCANNER UNIT RECEIVER UNIT NRG-229 

SCANNER UNIT POWER SUPPLY CIRCUIT CBD-1682A 

SCANNER UNIT RELAY FILTER CIRCUIT CSC-656 

SCANNER UNIT FAN 7BFRD0002 

3-4


Table 3-9: DISPLAY UNIT NCD-4530 


RADAR PROCESS 

UNIT 

RADAR PROCESS CIRCUIT 

CDC-1332 

RADAR PROCESS 

UNIT 

ARPA PROCESS CIRCUIT 

NCA-877WA 

RADAR PROCESS 

UNIT 

RADAR PROCESS 

UNIT 

ATA PROCESS CIRCUIT 

AIS PROCESS CIRCUIT 

NCA-877A 

NQA-2103 

3 

RADAR PROCESS 

UNIT 

GYRO I/F CIRCUIT 

NCT-59A 

RADAR PROCESS 

UNIT 

TERMINAL BOARD CIRCUIT 

CQD-1937A 

RADAR PROCESS 

UNIT 

I/F UNIT 

NQA-2123 

RADAR PROCESS 

UNIT 

POWER SUPPLY UNIT 

NBD-818A 

RADAR PROCESS 

UNIT 

FAN 

7BFRD0005 

OPERATION UNIT OPERATION CIRCUIT CCK-979 

OPERATION UNIT I/F CIRCUIT CQC-1204 

OPERATION UNIT TRACKBALL CCK-1000 

LCD MONITOR BEZEL KIT MPBC43590 FOR RADAR 

LCD MONITOR BLOWER CIRCUIT CBP-173A 

LCD MONITOR I/F CIRCUIT CMH-2227 

LCD MONITOR INVERTER CIRCUIT CBF-38 

LCD MONITOR BRILLIANCE CONTROL CIRCUIT CCK-989 

LCD MONITOR LCD PANEL CML-771 

3-5

INDEX > 3.Repair Parts > 3.2 Illustrated parts breakdown 

3.2 ILLUSTRATED PARTS BREAKDOWN 

Table 3-10: SCANNER UNIT NKE-2103 Parts List (JMA-5312-6/6HS) 

NO. NAME CODE NOTE 

1 RADIATOR ASSY. NAX-16B-6 MDNAX5041 NAX-16B-6 

1-1 RADIATOR ASSY. MDNAX5041 

1-2 BOLTS BRTG07249 M10X35SUS S-CORT 

1-3 SPRING WASHERS BRTG00404 SW10 SUS 

1-4 WASHERS MTL315466 

2 SUPPORT ASSY. MPGK31182 

2-1 ANTENNA SUPPORT MTC301684 

2-2 SLIDE PLATE MTT309252 

2-3 WATERPROOF RING MTT309256A 

2-4 O-RING BRPK00054 P42 

3 UPPER HOUSING ASSY. MPBX44085 

3-1 UPPER HOUSING MTC301682 

3-2 V-RING BRPK00189 V-100A 

3-3 LIQUID-TIGHT CABLE CLAMPS BRBP06738 OA-W1611EC1-BB 

4 DRIVE ASSY. MPGK31181 

4-1 MAIN SHAFT MTC301685 

4-2 MAIN GEAR MTG300511 

4-3 GEAR MTG300424A 

4-4 BRACKET MTC301655 

4-5 KEY MTL325003 

4-6 SPACER 1 MTL325004 

4-7 SPACER 2 MTL325005 

4-8 BEARING BRGK05420 6011ZZ 

4-9 BEARING BRGK05409 6009ZZ 

4-10 RETAINING RING TYPE-C BRTG05289 HC75 SK5 

4-11 BEARING NUT BRTG06929 AN09 

4-12 CROSS-RECESSED HEAD SCREW BSNC03010B NC3X8BS 

5 ROTARY JOINT MPAB31563 

6 MOTOR 7BDRD00048 H-7BDRD00048 CBP-202 

7 WAVE GUIDE UNIT MPAB31564 

7-1 WAVE GUIDE MTM301722A 

7-2 FLANGE MTM301843 

3-6




7-3 PUSH PLATE MTB366792A 

7-4 BOLTS BRTG08900 M4X25 SUS SW W 

8 ENCODER ASSY. MPEM30205 

8-1 ENCODER CHT-71A MDMW11070 CHT-71A 

8-2 GEAR MTT006909B 

8-3 TURN-STOPPER MTD001842 

9 LOWER HOUSING ASSY. MPBX44086A 

9-1 LOWER HOUSING MTC301683 

9-2 PACKING MTT312329 

9-3 BREATHING CAP MTV302550 

9-4 PACKING MTT305919A 

9-5 SWITCH COVER MPPK00925A 

9-6 CABLE PUSH PLATE MTB366112 

9-7 CABLE CLAMP BRBP00009 

3 

9-8 CROSS-RECESSED HEAD SCREW BSNK04010B NK4X10BS 


9-10 CROSS-RECESSED HEAD SCREW BSNB05010B NB5X10BS 

10 TRANCEIVER ASSY. MDNZT5023 NZT-2103 

10-1 MAIN CHASSIS MPBX44420 

10-2 WAVE GUIDE CIRCUIT MPAB31606 

10-2-1 CIR-ATTACHMENT MTB389799 

10-2-2 RECEIVER UNIT NRG-610 MDNRG5093 NRG-610 

10-2-3 DIODE LIMITER 5ATBT00006 NJS6930 

10-2-4 CIRCULATOR 5AJIX00027 FCX68R 

10-2-5 FILTER 5AWAX00002 NJC-9952 

10-2-6 GUIDE PLATE MTL326122 

10-2-7 DUMMY LOAD 5ANDF00001 NJC4002 

10-2-8 SPACER MTL318403 

10-2-9 MG-PIN MTL325492 

10-2-11 BOLTS BRTG07397 M4X12 SW SUS304 

10-2-12 CROSS-RECESSED HEAD SCREW BRTG07156 M4X70 BS 

10-2-13 CROSS-RECESSED HEAD SCREW BSNC04010B NC4X10BS 

10-2-14 SPRING WASHERS BSSW04000S SW4 

10-2-15 WASHERS BSFW04000B W4BS 

10-3 MODULATOR UNIT CME-363 MPBX44290 

10-4 POWER SUPPLY UNIT CBD-1783 MPBX44291 

3-7




10-5 MOTOR CONTROL PC CBD-1779 MDBW10832 CBD-1779 

10-6 MAGNETRON 5VMAA00102 5VMAA00102 MAF1565N 

10-7 RESISTORS - CFA-252 

10-8 FILTER PC - CFR-234 

10-9 COVER MTB389805 

10-10 NUT PLATE MTB388518 

10-11 CONNECTION PLATE MTB388903 

10-12 MOTOR COVER MTB391765 





11 ENCODER PLATE MTB388510A 

12 STAY MPDM30321 

13 GRAND-CABLE H-7ZCRD1504 

14 SHAFT MTL325006 

15 BOLTS MTL006545A M8X35 MACHINING 

16 SPRING WASHERS BRTG00747 SW8 SUS 

17 WASHERS BRTG00224 W8 

18 O-RING BRPK00027 P7 

19 CLAMP GLAND MPTG30399 

20 COVER BRTG01414 

21 GASKET MTT308695A 

22 WASHERS BRTG00883 

25 CORTED BOLTS BRTG09192 M8X20 SUS304 CORTED 

26 SEALING WASHERS BRTG06850 SUSW8S1 

27 HEX-HEAD SETSCREW BRTG1030G M4X0.7X6 SUS304 

28 BOLTS BRTG09297 M8X25 FE SW W 

ZMC4RBU 

29 BOLTS BRTG09296 M6X70 FE SW W 

ZMC4RBU 

30 CROSS-RECESSED HEAD SCREW BSNC04025B NC4X25BS 

31 BOLTS BRTG06852 M4X12 SW W SUS304 

32 BOLTS BRTG09004 M5X16 SW W SUS304 

33 CROSS-RECESSED HEAD SCREW BSNB05010B NB5X10BS 




3-8


3 

Fig.3-1: NKE-2103 illustrated parts diagram (JMA-5312-6/6HS) 

3-9


Table 3-11: SCANNER UNIT NKE-2254 Parts List (JMA-5322-7/9/6HS) 

No. NAME CODE NOTE 

1 RADIATOR ASSY. NAX-16B-6 6FT 

1-1 BOLT BRTG07249 HEX10X35 SUS304 

1-2 SPRING WASHER BRTG00404 SW10 

1-3 WASHER MTL315466 

2 SUPPORT ASSY. MPBX40223 

2-1 ANTENNA SUPPORT MTC301223A 

2-2 SLIDE PLATE MTT309252 

2-3 O-RING BRPK00054 P42 ID41.7 D3.5 

3 HOUSING ASSY. 

3-1 HOUSING MTC301727 

3-2 SLEEV MTL317432 

3-3 BREATHING CAP MTT309253 

3-4 UPSET BOLT BRTG09305 M5X12 FF ZMC4RBU 

3-5 TOGGLE SWITCH MDLW11931 CSD-654 

3-6 COVER FOR SW MPPK00925A 

3-7 COVER MTB389969 


3-9 NK5X10BS BSNK05010B 

3-10 NK5X12BS BSNK05012B 

4 COVER ASSY. MPBX44875 

4-1 COVER MTC301729 

4-2 PACKING MTV303883 

4-3 BOLT MPTG31381 

4-5 SPRING WASHER BRTG00747 M8SUS304 3.2X2 

4-4 WASHER BRTG00224 M8 SUS304 

4-6 SEALING WASHER BRTG01826 M8 SUS 

5 DRIVE ASSY. MPGK30895C 

5-1 FLANGE MTC301224A 

5-2 MAIN SHAFT MTH300568A 

5-3 MAIN GEAR MTG300423A 

5-4 GEAR MTG300424 

5-5 SPACER MTB366794A 

5-6 KEY MTL317433 

5-7 BEARING BRGK05410 6012ZZ CM/5K 

5-8 BEARING BRGK05409 6009ZZ CM/5K 

3-10




5-9 RETAINING RING-C TYPE BRTG06164 

5-10 ROLLING BEARING WASHER BRTG07261 AW10X ID50 

5-11 O-RING BRPK05043 G155 

5-12 ROLLING BEARING LOCKNUT BSAN10000S AN10 M50X1.5 

6 V-RING BRPK00189 V-100A 

7 BOLT BRTG07268 M8X25 TI 

8 SPRING WASHER BRTG07270 M8 TI 

9 WASHER BRTG07267 M8 TI 

10 BOLT BRTG06849 M8X23 SUS304 

11 ROTARY JOINT ASSY. MPAB31188 

12 WAVE GUIDE MPAB31207A 



13-2 SPUR GEAR MTT006909B 

13-3 CLICK MTD001842 

13-4 PLATE ENCODER MOUNTING MTB366793A 

3 

13-5 UPSET BOLT BRTG06852 M4X12 SW W SUS304 

14 MOTOR ASSY. - 

14-1 MOTOR 7BDRD0045A - 

14-2 - - 

14-3 FLANGE FOR MOTOR MTC301225 

14-4 BOLT BRTG09307 M8X30 SW W SUS304 

14-5 BOLT BRTG09306 M8X20 SW W FE ZMC 

15 CLUMP GLAND ASSY.(A30) MPJD30062A 

15-1 CLUMP GLAND MPTG31572A 

15-2 GASKET BRPK00108 

15-3 WASHER BRTG01246 30B AL 

15-4 COVER BRTG01415 30 AL 



16-2 GASKET BRPK00134 A25A 

16-3 WASHER BRTG00883 25A AL 

16-4 COVER BRTG01414 25 AL 

17 HEAT RADIATION BOARD MPBC43035 

18 POWER SUPPLY UNIT MPBX44439 

18-1 CHASSIS FOR POWER SUPPLY MPBX44440 

3-11


18-2 POWER SUPPLY PC MDBW10837 CBD-1682A 

19 - - 

20 MOTOR CONTROL ASSY. MPBX44318A 

20-1 CHASSIS FOR CONTROL MPBX44319 

20-2 MOTOR POWER SUPPLY PC MDBW10832 CBD-1779 

21 TRANCEIVER ASSY. MDNZT5024A NZT-1125 

21-1 MODULATOR UNIT MDNMA5077A NMA-550-1 

21-2 MAIN CHASSIS MPBX44445 

21-3 COVER ASSY.(L) MPBX44446 

21-4 COVER ASSY.(S) MPBX44447 

21-5 

MODULATOR PC 

CPA-264 

(MDLW11927) 

MDLW11930 

CPA-264 

21-6 MAGNETORON 5VMAA00106 - 

21-7 PULSE TRANSFORMER - 

21-8 FLAME MPBC43040 

21-9 HOLDING PLATE MTB389330 

21-10 CIRCULATOR - 

21-11 DIODE LIMITER - 

21-12 WAVE GUIDE MPAB31622 

21-13 GUIDE PLATE MTL318911A 

21-14 SPACER MTL318403 

21-15 SPURIOUS FILTER - NJC9952 

21-16 DUMMY LOAD - NJC4002 

21-17 TR-CONTROL PC CMC-1205R - CMC-1205R 

21-18 RECEIVER ASSY. NRG-162A MDNRG5094A NRG-162A 

21-19 NUT PLATE MTB389894 

21-20 FAN MPEM30151 

21-21 CROSS-RECESSED HEAD SCREW BSNC04030B 

21-22 



BOLT BRTG07502 M5X16 SW W 

SUS304 

21-23 O-RING BRPK00019 

21-24 BOLT BRTG07397 M4X12 SW SUS304 

21-25 CROSS-RECESSED HEAD SCREW BRTG05659 NK4X0.7X65BS 

22 PERFORMANCE MONITOR UNIT NJU-85 - NJU-85 

23 PM ADAPTER MPBC43041A 

24 NECK HEATOR KIT MDMW11067A (CHG-216) 

24-1 NECK HEATOR UNIT - 

3-12




24-2 PLATE CLAMP MTB374149 


24-4 TERMINAL BOARD FOR HEATER - 

25 CROSS-RECESSED HEAD SCREW BSNC04010B M4X10 SW LW 

26 CROSS-RECESSED HEAD SCREW BSNC04016B M4X16 SW LW 

3 

3-13


Fig.3-2: NKE-2254 illustrated parts diagram (JMA-5322-7/9/6HS) 

3-14


Table 3-12: SCANNER UNIT NKE-1130 Parts List (JMA-5332-12) 


1 RADIATOR ASSY. MPAE30494 SBAND-12FT 

1-1 BOLT MPTG30317 M10X35SUS 

1-2 SPRING WASHER BRTG00404 SW10 SUS 

1-3 WASHER BRTG00402 W10 SUS 

2 SUPPORT ASSY. MPGK31208 

2-1 ANTENNA SUPPORT MTC301654 

2-2 SLIDE PLATE MTB085860 

2-3 ANGLE MOUNTING MTA301876 

2-4 FLANGE MTC301697 

2-5 PLATE MTB388904 

2-6 BOLT BRTG00413 M10X25SUS 

2-7 O-RING BRPK00077 

2-8 O-RING BRPK00102 

3 HOUSING ASSY. MPBX44644 

3-1 HOUSING MTC301650A 




3-5 EYEBOLT BRTG09377 M10X25SUS 

3 

3-6 BOLT BRTG00876 HEX6X12SUS_SW_W 

4 COVER ASSY. MPBX44206 

4-1 COVER MTC301653A 

4-2 PACKING MTV304394 

4-3 BOLT MPTG31381 B8X30 

4-4 SPRING WASHER BRTG00224 SW8 SUS304 

4-5 WASHER BRTG00747 W8 SUS304 

4-6 SEALING WASHER BRTG01826 

5 DRIVE ASSY. MPGK31207 

5-1 FLANGE MTC301652A 

5-2 MAIN SHAFT MTH300660 

5-3 MAIN GEAR MTG300493 

5-4 GEAR MTG300424A 

5-5 SPACER MTL325042 

5-6 - - 

5-7 KEY MTK300651 

3-15




5-8 PLATE MTL325041 

5-9 BEARING BRGK05486 6018ZZCM/5K 

5-10 BEARING BRGK05419 6014ZZCM/5K 

5-11 V-RING BRPK00337 V-180A 

5-12 BEARING CASE MTL325043 

5-13 BOLT BRTG04290 CAP8X30_SCM435 

5-14 ROLLING BEARING LOCKNUT BSAN13000S AN13 

5-15 ROLLING BEARING LOCKNUT BSAN18000S AN18 

5-16 ROLLING BEARING WASHER BSAW13000S AW13 

5-17 ROLLING BEARING WASHER BSAW18000S AW18 

5-18 BOLT BRTG09193 M10X30SUS 

6 ROTARY JOINT ASSY. MPAB31588 

7 MOTOR ASSY. MDBW10823 MDBW10823 CBP-205 

7-1 MOTOR - 

7-2 SPUR GEAR MTG300142A 

7-3 BOLT BRTG00752 HEX10X40SUS 

8 TURNING SWITCH ASSY. - 

8-1 CAP MPDM30338 

8-2 TOGGLE SWITCH MPSW30170 CSD-656 

8-3 HOUSING MTV001589 

8-4 COVER FOR SW MPPK00925A 




9-3 WASHER BRTG01246 

9-4 COVER BRTG01415 




10-3 WASHER BRTG00883 

10-4 COVER BRTG01414 



11-2 PLATE ENCODER MOUNTING MTB366793A 

11-3 SPUR GEAR MTT006909B 

11-4 CLICK MTD001842 

3-16




12 WAVE GUIDE ASSY MPAB31722 

12-1 CIRCULATOR - NJS6318 

12-2 SPURIOUS FILTER MPAB31663 

12-3 DIODE LIMITER - 

12-4 DUMMY LOAD MPAB31595 

12-5 PLATE MTB391087 

13 INTERNAL UNIT GUIDE ASSY MPBP31560 

14 WAVE GUIDE ASSY MPAB31723A 

3 

15 POWER SUPPLY UNIT MPBX44646 

15-1 CHASSIS FOR POWER SUPPLY MPBC43418 

15-2 POWER SUPPLY PC CBD-1682A MDBW10837A CBD-1682A 

16 MODULATOR UNIT MDNMA5080A NMA-551-1 

16-1 MAIN CHASSIS MPBC43438 

16-2 

MODULATOR PC 

CPA-264 

(MDLW11927) 

MDLW11946 

CPA-264 

16-3 MAGNETORON 5VMAA00104 - 

16-4 

HOLDING PLATE FOR 

MAGNETORON 

MPBP31522 

16-5 FAN 7BFRD0002 - 

16-6 FAN GUARD - 


16-8 CROSS-RECESSED HEAD SCREW BSNB04010B NC4X10BS 

17 RECEIVER ASSY. MPBX45031 

17-1 CHASSIS FOR RECEIVER MPBX45032 

17-2 RECEIVER NRG-229 MDNRG5092B NRG-229 

17-3 CHASSIS FOR TRCONT MPBC43420 

17-4 TR-CONTROL PC CMC-1205R CMC-1205R 

17-5 TERMINAL BOARD MPBC43421 

17-6 RELAY PC CSC-656 CSC-656 

17-7 CHASSIS FOR CONTROL MPBX45027 

17-8 BRAKE CONTROL PC CCB-655 CCB-655 

18 MOTOR CONTROL ASSY. MPBX44651 

18-1 

CHASSIS FOR MOTOR 

CONTROL 

MPBX44653 

18-2A MOTOR DRIVER FOR 100V 7PERD0035 - CBP-2001 

18-2B MOTOR DRIVER FOR 220V 7PERD0034 - CBP-2000 

19 HOLDING PLATEA FOR UNIT MPBP31565 M6X16 SW W SUS304 

3-17


20 HOLDING PLATEA FOR 

MODULATOR 

21 HOLDING PLATEB FOR 

MODULATOR 



MTB391101 

MTB391102 

22 HOLDING PLATEB FOR RECEIVER MTB391103 

23 PERFORMANCE MONITOR UNIT - 

23-1 PERFORMANCE MONITOR NJU-84 - NJU-84 

23-2 CRADLE MTB391104 


24 NECK HEATER KIT MDMW11048 (CHG-215) 

24-1 NECK HEATER UNIT - 




3-18


3 

Fig.3-3: NKE-1130 illustrated parts diagram (JMA-5332-12) 

3-19


Table 3-13: POWER CONTROL UNIT NQE-3167 Parts List 


1 CHASSIS ASSY. MPBX43912 

1-1 CHASSIS MPBC42355 

1-2 CLAMP MTL305132 

1-3 CLAMP MTL305133 

1-4 BOLT BRTG00930 


2 COVER ASSY. MPBC41009 


2-2 THUMB SCREW BRTG05973 TL-233-8 M6X15 

3 PARTITION BOARD ASSY. MPBC42360 

4 INSIDE BOARD ASSY. MPBC42362A 

5 POWER SUPPLY FOR MODULATOR - LEP240F-48-T 

6 POWER SUPPLY FOR MOTOR - LEP240F-24-T 

7 CONNECTED CIRCUIT PC - CQP-58 

8 FAN FOR POWER SUPPLY - 

8-1 FAN 7BFRD00002 109P0612M601 

8-2 FAN GUARD - 




3-20


3 

Fig.3-4: NQE-3167 illustrated parts diagram 

3-21


Table 3-14: RADAR PROCESS UNIT NDC-1417 Parts List 


1 COVER ASSY MPBC42275 

2 CHASSIS ASSY MPBX44299A 

3 BRACKET MTB382448 

4 REAR PANEL MPBC42279 

5 AIS PROCESS CIRCUIT NQA-2103 

6 BREAKER 

7 GUARD HANDLE THA-212-3 BRHD05338 

8 PLOTTER CONTROL UNIT NDB-34A 

9 CONTRL UNIT CDC-1332 

10 ARPA PROCESS CIRCUIT NCA-877WA 

11 ATA PROCESS CIRCUIT NCA-877A 

12 SPACER BSB-308E BRBP06402 

13 SPACER BSB-325E BRBP06407 

14 COACHING CLIP CS-4U BRBP05299 

15 CHASSIS ASSY (GYRO I/F) MPBX44466A 

16 GYRO I/F UNIT NCT-59A 

17 PARTITION ASSY MPBX44301 

18 TERMINAL UNIT CQD-1937A 

19 CABLE CLAMP 1 MTB387444 



22 DRIP-PROOF RUBBER MPPK30497A 

23 

POWER SUPPLY UNIT (CBD- 

1655) 

CBD-1655A 

24 HEAT SINK MTC301647 

25 I/O CIRCUIT UNIT CMH-2201 MDYW12516 

26 GASKET 1 MTT308585 

27 GASKET 2 MTT308586 

28 HEAT SINK MTC301647 

29 CONNECTOR 

30 FUSE 

31 WASHER 

3-22


Table 3-14: RADAR PROCESS UNIT NDC-1417 Parts List 


32 NUT 

33 NUT 

34 NUT 

35 SPECIAL BOLT MTL323366 

36 RUBBER WASHER MTT301458A 

37 EARTH ASSY 

38 SEMS SCREW NC3X8BS BSNC03008B 

39 SEMS SCREW NC3X12SUS BRTG03547 

3 

40 SEMS SCREW NB5X12BS BSNB05012B 

41 SEMS SCREW NC2.6X10BS BSNC02610B 





46 MOUNTING PLATE (FAN) MTB389650 

47 FAN 

48 FINGER GUARD 

49 FLAT-HEAD SCREW S4X35BS BSSK04035B 

50 

51 

BEZEL 

MODULE (SNAP IN) 

NW073-FSM- 

BK-P10 

NW080-88S- 

C5 

3-23


Fig.3-5: NDC-1717 illustrated parts diagram 

3-24


Table 3-15: OPERATION UNIT NCE-5171 Parts List 

No. DESCRIPTION CODE 

1 PANEL MTV303808 

2 COVER MTV303809 

3 RUBBER KEY MTV304379A 

4 PACKING MTV303811 

5 Φ 16 KNOB MPHD30383 

6 Φ 38 KNOB MPHD30378 

7 PACKING (FOR SPEAKER) MTZ301931 

8 PACKING (FOR 

VIBRATIONPROOF) 

MTT306943 

3 

9 SPEAKER 

10 TRACKBALL COVER MTV303599 

11 TEFLON RING MTT308975 

12 TRACKBALL 

13 SPACER MTT309110 

14 KEYBOAD UNIT CCK-979 

15 PS2 I/F CIRCUIT 

16 DRIP-PROOF RUBBER MTV303812 

17 CABLE CLAMP FGC-5 BRBP05042 

18 RUBBER WASHER MTT301458A 

19 PT SCREW 1411-H2- 

3010C 

BRTG09222 

20 PT SCREW 1411-H2-3008 BRTG09223 

21 WATERPROOF SHEET BRPK05061 

22 CABLE 

3-25


Fig.3-6: NCE-5171 illustrated parts diagram 

3-26

Section 4 

Replacement Procedure 

4.1 Precautions (Scanner Unit) ..................................................................4-1 

4.1.1 Precautions for replacing parts in the scanner unit .............................. 4-1 

4.2 Scanner Unit NKE-1130 (JMA-5332-12) ...............................................4-2 

4.2.1 Remove the cover / NKE-1130 ................................................................. 4-2 

4.2.2 Magnetron replacement (M1555) ............................................................. 4-4 

4.2.3 Motor replacement (MDBW10823) ........................................................... 4-6 

4.2.4 Motor Driver replacement (7EPRD0035, 7EPRD0034) ........................... 4-8 

4.2.5 Motor Driver Fan replacement (7BFRD0002) .......................................... 4-9 


4.2.7 Modulation Circuit replacement (CPA-264) .......................................... 4-11 


4.2.9 Power Supply Circuit replacement (CBD-1682A) ................................ 4-13 


4.2.11 Relay Filter Circuit replacement (CSC-656) .......................................... 4-15 

4.2.12 Receiver Unit Replacement (NRG-229) ................................................. 4-16 


4.2.14 Brake Control Circuit replacement (CCB-655) ..................................... 4-19 


4.2.16 Brake Unit replacement (NZR-17) .......................................................... 4-22


4.3 Scanner Unit NKE-2254 (JMA-5322-7/9/6HS) ...................................4-24 


4.3.2 Magnetron replacement (M1568BS) ...................................................... 4-26 

4.3.3 Motor replacement (7BDRD0044A, 7BDRD0045A) ............................... 4-28 


4.3.5 Modulator Circuit replacement (CPA-264) ............................................ 4-31 


4.3.7 Power Supply Circuit replacement (CBD-1682A) ................................. 4-35 


4.3.9 Receiver Unit replacement (NRG-162A) ................................................ 4-38 


4.3.11 Magnetron Fan replacement (7BFRD0002) ........................................... 4-40 




4.4 Scanner Unit NKE-2103 (JMA-5312-6/6HS) .......................................4-46 


4.4.2 Magnetron replacement (MAF1565N) .................................................... 4-47 

4.4.3 Motor replacement (7BDRD0048) .......................................................... 4-49 


4.4.5 Modulator Circuit replacement (CME-363) ............................................ 4-51 

4.4.6 Power Supply Circuit replacement (CBD-1783) ................................... 4-52 

4.4.7 Receiver Unit replacement (NRG-610) .................................................. 4-53 




4.5 Display Unit : LCD Monitor NWZ-173 ................................................4-58 

4.5.1 Bezel Kit replacement (MPXP43590) ..................................................... 4-58 

4.5.2 LCD Panel replacement (CML-771) ........................................................ 4-60 

4.5.3 Brilliance Control Circuit replacement (CCK-989) ............................... 4-63 

4.5.4 Interface Circuit Board replacement (CMH-2227) ................................ 4-65 

4.5.5 Inverter Circuit replacement (CBF-38) .................................................. 4-67 

4.5.6 Blower Circuit replacement (CBP-173A) ............................................... 4-68 

4.6 Display Unit : Radar Process Unit NDC-1417 ...................................4-69 

4.6.1 Power Supply Circuit (NBD-818A) ......................................................... 4-69 

4.6.2 I/F Unit replacement (NQA-2123) ........................................................... 4-70 

4.6.3 Radar Process Circuit replacement (CDC-1332) .................................. 4-73 

4.6.4 Battery replacement (CR2032) ............................................................... 4-76 

4.6.5 ARPA/ATA Process Circuit replacement (NCA-877WA/877A) ............ 4-78 

4.6.6 AIS Process Circuit replacement (NQA-2103) ...................................... 4-79 

4.6.7 GYRO Interface Unit replacement (NCT-59A) ....................................... 4-81 

4.6.8 GYRO Interface Circuit Fuses replacement (MF51NR-0.5A) ............... 4-83 

4.6.9 Terminal Board replacement (CQD-1937A) .......................................... 4-85 

4.6.10 Radar Process Unit Fan replacement (7BFRD0005) ............................ 4-86 

4.7 Display Unit : Operation Unit NCE-5171 ...........................................4-87 

4.7.1 Oeration Circuit replacement (CCK-979) .............................................. 4-87 

4.7.2 Interface Circuit replacement (CQC-1204) ............................................ 4-88 

4.7.3 Trackball replacement (CCK-1000) ........................................................ 4-90

INDEX > 4.Replacement Procedure > 4.1 Precautions (Scanner Unit) 

4.1 Precautions (Scanner Unit) 

4.1.1 Precautions for replacing parts in the scanner unit 

Keep the following precautions in mind to avoid injuries when you replace parts. 

Before starting part replacement, make sure all power supplies for all radars (when you 

are using more than one radar) are turned off. Shut off the circuit breaker for the main 

power supply. 

Wear gloves to avoid injury when replacing parts. Be careful to ensure safety when 

working at a height, including measures to ensure that no tools or parts are dropped. 

4 

Perform the part replacement work where the ship is stable, such as in a harbor. 

Be careful that the radiator, which may rotate in the wind, does not hit a maintenance 

engineer. 

Do not replace any parts when the radiator is rotating by the wind or by the hands. There 

is a danger risk of getting an electric shock. Because the motor generates high voltage 

when the radiator is rotating, even if the power is turned off. 

4-1

INDEX > 4.Replacement Procedure > 4.2 Scanner Unit NKE-1130 (JMA-5332-12) 

4.2 Scanner Unit NKE-1130 (JMA-5332-12) 

4.2.1 Remove the cover / NKE-1130 

[Required tools] 

• Tools for removing the cover from the scanner unit 

A wrench (width across flats 13 mm, for M8 screws) 

• Tools used in each part replacement procedure. 

[Replacement procedure] 

1) Before starting part replacement work, turn off the safety switch of the scanner unit. 

The safety switch is located on the rear (stern) 

side. Remove the cover and turn off (to the lower 

side) the safety switch. 

Bow side 

Turn off the 

safety switch. 

2) Remove the pedestal cover. 

Remove the cover on the left (port) side to replace 

the parts listed below: 

• Transmission unit (magnetron, modulator 

circuit board, fan for modulator unit) 

• Power supply circuit board 

Remove the cover on the right (starboard) side to 

replace the parts listed below: 

• Receiving unit 

• T/R control circuit board 

• Relay filter circuit board 

• Motor drive circuit board 

Remove the eight 

hexagonal screws. 

Removing the port side cover 

4-2


• Fan for motor driver circuit board 

• Encoder 

• Brake control circuit board 

To replace the motor, remove the covers on both sides. 

3) Follow the procedure provided in the following sections to replace the necessary parts. 

Be careful not to lose removed screws and metal fittings. 

4) After replacing the parts, return the pedestal cover to its original place and turn on the 

safety switch (do not forget to put the cover back on). 

Make sure that there is no foreign matter or dust adhered to the gasket when you put the cover 

on. 

5) Turn on the radar power supply and check that the system works properly. 

4 

4-3


4.2.2 Magnetron replacement (M1555) 


• A Phillips screwdriver for 4 mm screws 

• A shielded Phillips screwdriver for 6 mm screws 


(see Section 4.2.1, page 4-2) 


1) Remove the cover on the left (port) side (see Section 4.2.1, page 4-2) and check that 

there is no remaining electric charge between J2101 pin 1 and J2101 pin 3 in the 

modulator circuit board CPA-264. (Multimeter requires DC1000V input capability) 

Remove the two screws (M4) 

holding the magnetron cables (both 

yellow and green). 

Magnetron 

Remove the green cable. 

Remove the yellow cable. 

Remove the 

two screws. 

2) Remove the eight screws (M6) to 

remove the fixture holding the 

magnetron. The screws cannot be 

removed from the fixture, so loosen the 

all eight screws and remove the 

magnetron together with the fixture. 

Remove the magnetron. 

The magnetron is held by a hook, but be 

careful not to let it fall. 

Remove the metal fixture. 

Use a shielded screwdriver. If the 

magnetron comes into contact with any 

metal (tool), its performance may 

deteriorate. 

Loosen the 

eight screws. 

4-4


3) Install the new magnetron together with the fixture and tighten the screws to hold the 

cables. 

Follow the removal procedure in the reverse order. 

Do not forget to tighten the screws and connect the cables. 

[Check points] 

1) Turn on the power supply for the radar. Allow sufficient time for the radar to be 

preheated (about 20 to 30 minutes / bring the radar unit to STBY mode). 

2) Start emitting radio waves from the short pulse range and gradually change the 

emissions to the long pulse range. Open the serviceman menu to perform tuning 

adjustment (Refer to Section 7.1.3 of the instruction manual). 

If operation becomes unstable such as the magnetron current is unstable (see Section 6.1.1, 

page 6-1), bring the radar unit back to STBY mode and restart emission after allowing for an 

interval of 5 to 10 minutes. 

4 

3) Transmit radar signals on a long range (48NM) for about 15 minutes and reopen the 

serviceman menu to perform tuning adjustment. 

Adjust the setting in the serviceman menu until the tuning indication bar on the display unit 

reaches the 8th calibration marking. 

Check in the test menu that the magnetron current is between the 6th and 9th calibration 

markings. 

Finally, initialize the transmission time in the serviceman menu (Refer to Section 7.4.4 of the 

instruction manual). 

4-5


4.2.3 Motor replacement (MDBW10823) 


• a wrench (width across flats 17 mm, for M10 

screws) 





1) Remove the cover on the right (starboard) side 

(see Section 4.2.1, page 4-2) and loosen the 

four screws (M4) to remove the driver unit, 

which has the motor driver circuit board on its 

back side. 

Disconnect the cables connecting the motor to the 

motor driver circuit board. 

Driver unit (driver circuit 

board at the back side) 

Remove the 

four screws. 

Driver circuit 

board 

Disconnect the 

cables. 

2) Remove the cover on the left (port) side and 

remove the five screws (M5) to remove the 

fixture. 

Remove the 

metal fixture. 

Remove the 

five screws. 

4-6


3) Remove the four hexagonal screws (M10x40, 

SW10, and W10) that hold the motor from both 

the right and left sides to remove the motor. 

Remove the four hexagonal 

screws (two screws on each side) 

4 

4) Apply grease to the gear wheel of the new 

motor. 

Remove the motor. 

Apply grease. 

5) Install the new motor in the scanner unit and 

secure it using the hexagonal screws. Tighten 

the screws with the specified torque (380 kgfcm) 

Motor gear wheel 

6) After replacing the motor, assemble the unit in the reverse order of the disassembly 

procedure. 



1) Turn on the radar power supply. After the countdown is completed, start emission and 

check that the radar image appears without error. Check that you do not hear any 

unusual sound when the motor starts, rotates, and stops. 

2) Open the serviceman menu to initialize the motor rotation time. 

4-7


4.2.4 Motor Driver replacement (7EPRD0035, 7EPRD0034) 







(see Section 4.2.1, page 4-2) and loosen the 

four screws (M4) to remove the drive unit, 

which has the motor driver circuit board on its 

rear side. 

Driver unit (driver circuit 

board at the back side) 

Remove 

the four 

screws. 

2) Remove the cables connected to the driver 

circuit board and the four screws to replace the 

driver circuit board with a new one. 

Make sure the new driver circuit board is for the 

power specifications you are using. There are two 

types of board available, for 100 Vac and 220 Vac 

specifications. Check the indication on the circuit 

board to determine which specification the board is 

for. 

AC100V: 7EPRD0035 

AC220V: 7EPRD0034 

Driver circuit 

board 

Voltage 

specification is 

indicated here. 

3) After replacing the driver circuit board, follow 

the disassembly procedure in the reverse order. 

Remove the four screws. 






4-8


4.2.5 Motor Driver Fan replacement (7BFRD0002) 







(see Section 4.2.1, page 4-2) and loosen the four 

screws (M4) to open the cover for the T/R control 

circuit board. Remove the motor driver circuit 

board fan cable (connector P1114) from the T/R 

control circuit board. 

Remove 

the cable. 

4 

Loosen the four screws. 

Remove the cable. 

2) Remove the four screws (M4) to 

replace the fan. 

T/R control circuit board 

Fan 

3) After replacing the fan, assemble the unit in the 

reverse order of the disassembly procedure. 

Do not forget to tighten the screws and connect the 

cables. 

Remove 

the four 

screws. 



check that the radar image appears without error. Check that no fan alarm comes up. 

4-9


4.2.6 Modulator Unit Fan replacement (7BFRD0002) 






1) Remove the cover on the left (port) side (see 

Section 4.2.1, page 4-2). Remove the modulator 

unit fan cable (connector P1112) from the relay 

connector. 


Fan 

2) Remove the four screws (M4) to replace the fan. 

Fan 

3) After replacing the fan, assemble the unit in the 

reverse order of the disassembly procedure. 


cables. 

Remove 

the four 

screws. 




4-10


4.2.7 Modulation Circuit replacement (CPA-264) 






1) Remove the cover on the left (port) side (see Section 4.2.1, page 4-2) to remove all 

cables connected to the Modulator circuit board (CPA-264). 

2) Remove the two screws (M4) holding the 

metal sheet and the radiating plate of the 

Modulator circuit board and the six screws 

(M4) holding the Modulator circuit board, to 

replace the Modulator circuit board. 

3) After replacing the Modulator circuit board, 

assemble the unit in the reverse order of the 

disassembly procedure. 

Modulator circuit board 

金具 

Remove the two 

screws. 

Remove 

the six 

screws. 

4 




check that the radar image appears without error. 

Transmit radar signals on a long range (48NM) and with the test menu open, also make sure 

the magnetron current is shown between the 6th and 9th calibration markings (see Section 

6.1.1, page 6-1). 

4-11


4.2.8 Modulator Unit replacement (NMA-551-1) 






1) Remove the cover on the left (port) side (see Section 4.2.1, page 4-2) to remove all 

cables connected to the Modulator circuit board (CPA-264). 

2) Remove the magnetron (see Section 4.2.2, page 4-4). 


metal sheet and loosen the five screws 

(M5) holding the Modulator unit, to 

replace the Modulator unit. 

Remove 

4) Assemble the Modulator unit in the 

reverse order of the disassembly 

procedure. 

Loosen 

5) After replacing the Modulator unit, 

assemble the magnetron (see Section 4.2.2, page 4-4). 







6.1.1, page 6-1). 

4-12


4.2.9 Power Supply Circuit replacement (CBD-1682A) 




• Tools for removing the cover from the scanner 

unit (see Section 4.2.1, page 4-2) 


1) Remove the cover on the left (port) 

side (see Section 4.2.1, page 4-2). 

Remove the cables connected to the 

Modulator circuit board (connectors 

P2101 and P2102) and the fan cable 

(P1112). 

Modulator circuit board 

Remove the three cables 

4 

2) Remove the two screws (M5) from 

the fixture. Loosen the six screws 

(M6) holding the magnetron and the 

five screws (M5) holding the 

modulator unit, to remove the 

modulator unit. 

Remove the two screws. 

Loosen the six screws. 

Loosen the 

five screws. 

3) Remove the cable connected to the 

power supply circuit board and the eight screws 

(M4) to replace the power supply circuit board. 

Remove the eight screws. 

4) After replacing the power supply circuit board, 

assemble the unit in the reverse order of the 



cables. 




4-13 

Power 

supply circuit 

board


4.2.10 T/R Control Circuit replacement (CMC-1205R) 






1) Before starting replacement work, open the serviceman menu on the display unit and 

back up the scanner unit data (emission time and motor rotation time) (Refer to Section 

7.4.4 of the instruction manual). 

If you do not back up the data, you will lose all data related to the scanner, such as 

magnetron usage time. 

2) Remove the cover on the right (starboard) side (see 

Section 4.2.1, page 4-2). Loosen the four screws 

(M4) to open the T/R control circuit board cover to 

the front. 

3) Remove the cable connected to the T/R control 

circuit board and the seven screws (M4) to replace 

the T/R control circuit board. 

Set the DIP switches and the jumper pins on the T/R 

control circuit board to the settings for NKE-1130 (see 

Section 2.5.6, page 2-25). 

Loosen the six screws. 

4) After replacing the T/R control circuit board, assemble 

the unit in the reverse order of the disassembly 

procedure. 


T/R control circuit board 


1) Turn on the radar power supply and open the serviceman menu. Restore the scanner 

unit time and check that all data is recovered from before replacing the T/R control 

circuit board (check the emission time and the motor rotation time). 

4-14


2) After the countdown is completed, start emission and check that the radar image 

appears without error. 

4.2.11 Relay Filter Circuit replacement (CSC-656) 






4 

1) Remove the cover on the right (starboard) side (see 

Section 4.2.1, page 4-2). Open the T/R control 

circuit board cover to the front (see Section 4.2.10, 

page 4-14) to remove the cable clamps around the 

relay filter circuit board. 

Remove the clamps. 

Relay filter circuit board 

2) Remove the four screws (M4) to remove the 

metal fixture holding the relay filter circuit 

board, which is located at the bottom of the 

terminal block. 


4-15


3) Remove the cable connected to the relay filter 

circuit board and the four screws (M4) to replace 

the relay filter circuit board. 

Remove 

the screws. 

4) After replacing the relay filter circuit board, 

follow the disassembly procedure in the reverse 

order. 


cables. 

Relay filter circuit board 




4.2.12 Receiver Unit Replacement (NRG-229) 







1) Remove the cover on the right (starboard) 

side (see Section 4.2.1, page 4-2). Remove 

the four screws (M5) to remove the metal 

fixture. Loosen the four screws (M4) to 

remove the driver unit (see Section 4.2.4, 

page 4-8). 


Driver unit 

Metal fixture 

Loosen the four screws. 

4-16


2) Open the T/R control circuit board cover 

to the front (see Section 4.2.10, page 4- 

14) to remove the cables connected to the 

receiving unit. Remove the four screws 

(M5) holding the receiving unit flange, 

the two screws (M5) holding the metal 

fixture, and the screw at the right side of 

the receiving unit to replace the receiving 

unit. 

3) Attach the metal fixture attached to the 

flange removed from the old receiving 

unit and put it onto the new receiving unit. 

Remove the six screws. 

Metal fixture 

(reused for the new 

receiving unit) 

Remove the cables 

Loosen the two screws. 

4 

4) After replacing the receiving unit, assemble the unit in the reverse order of the 






Transmit radar signals on a long range (48NM) and open the serviceman menu to perform 

tuning adjustment (Refer to Section 7.1.3 of the instruction manual). Adjust the setting in the 

serviceman menu until the tuning indication bar on the display unit reaches the 8th calibration 

marking. 

4-17


4.2.13 Encoder replacement (CHT-71A) 



• a Phillips screwdriver for 5 mm screws 

• A wrench (width across flats 7 mm, for M4 screws) 






side (see Section 4.2.1, page 4-2). Remove 

the four screws (M5) to remove the metal 

fixture. Loosen the four screws (M4) so 

that the receiving unit is held halfway. 


Loosen the 

four screws. 

2) Remove the four screws (M5) from the 

receiving unit flange and remove the 

screws loosened halfway in (1) above to 

remove the receiving unit. 

Receiving unit 


Receiving unit flange 

Encoder 

Receiving unit 

4-18


3) Loosen the two screws (M4) to remove the 

encoder together with the metal fixture. 

Encoder 

Metal fitting 


screws. 

4) Remove the metal fixture and the gear wheel 

attached to the encoder. Put them onto the new 

encoder and put the encoder back into the unit. 

5) After replacing the encoder, follow the 

disassembly procedure in the reverse order. 

Remove the nut 

Metal fitting 

4 

Do not forget to tighten the screws and connect 

the cables. 

Encoder 

Remove the three s 



check that the radar image appears without error.Open the serviceman menu to perform 

bearing adjustment. (Refer to Section 7.1.4 of the instruction manual) 

4.2.14 Brake Control Circuit replacement (CCB-655) 




unit(see Section 4.2.1, page 4-2) 

4-19



1) Remove the cover on the right 

(starboard) side (see Section 4.2.1, 

page 4-2). Remove the two screws 

(M4) to remove the metal fixture for 

the T/R control circuit board and 

loosen the two screws (M4) to open 

the T/R control circuit board cover 

to the front. 


screws. 

T/R Control Circuit 

(CMC-1205R)Metal cover 

Loosen the two 

screws. 

2) Remove the cable connected to the 

T/R control circuit board and the 

seven screws (M4) to replace the T/R 


3) Remove the two screws (M4) (which 

was loosen on the procedure (1)) to 

remove the T/R control circuit board 

and the metal fixuture. 

T/R Control Circuit 

(CMC-1205R) 

4) Remove the cable 

connected to the brake 


5) Remove the four 

screws(M4) to replace the 

brake control circuit board 

with the metal sheet. 

Break control circuit which 

is mounted on the metal 

sheet.(CCB-656) 

6) After replacing the brreak control circuit board, assemble the unit in the reverse order 

of the disassembly procedure. 





4-20


4.2.15 Brake Circuit replacement (CFA-255) 







1) Remove the drive unit (see Section 4.2.4, page 4-8). 

Remove the cable connected to J1504 in the motor 

driver circuit 7EPRD0034/35. 

7EPRD0034/0035 

4 

J1504 

2) Remove the two screws (M4) holding the brake circuit 

on the metal fixture to replace the brake circuit (CFA- 

255: resistors with cables). 

3) After replacing the brake circuit, assemble the unit in 

the reverse order of the disassembly procedure. 


CFA-255 


1) Turn on the radar power supply. After the countdown is 

completed, start emission and check that the radar 

image appears without error. 

Remove 2 screws. 

4-21


4.2.16 Brake Unit replacement (NZR-17) 








1) Remove the cover on the right (starboard) side (see Section 4.2.1, page 4-2).Remove 

the receiver unit (see Section 4.2.12, page 4-16). 

2) Remove the cable connected to J1911 and 

J1921 in the brake control circuit board 

CCB-655. 

3) Remove the four screws (M4) holding the 

brake control circuit board to replace the 

brake unit NZR-17. 

Remove 4 

screws. 

4) After replacing the brake unit, assemble the 

unit in the reverse order of the disassembly 

procedure. 

CCB-655 

J1921 

J1911 


the cables. 




4-22


4.2.17 Performance Monitor replacement (NJU-84) 

4 

4-23

INDEX > 4.Replacement Procedure > 4.3 Scanner Unit NKE-2254 (JMA-5322-7/9/6HS) 

4.3 Scanner Unit NKE-2254 (JMA-5322-7/ 

9/6HS) 



・Tools for removing the cover from the scanner 

unit 

A wrench (width across flats 13 mm, for M8 

screws) 

・Tools used in each part replacement procedure. 


1) Before beginning work, turn off 

the safety switch on the bottom of 

the scanner unit. 

Bow direction 

2) Loosen the four hexagonal bolts 

and remove the pedestal cover. 

Turn off the 


If replacing any of the following parts, remove the 

cover on the left (port) side. 

• Motor 

• Motor driver circuit board 

If replacing any of the following parts, remove the 

cover on the right (starboard) side. 

Loosen the four 

hexagonal bolts. 

4-24


• Transmitter (magnetron, modulator circuit board, modulator circuit board fan) 

• Receiver 

• T/R control circuit board 

• Power supply circuit board 

• Encoder 

3) Replace the necessary part(s) following the procedures contained in subsequent 

sections. 

When replacing a part, be careful not to lose any of the removed screws or metal fittings. 

4) After having replaced a part, install the pedestal cover and turn on the safety switch (do 

not forget to put the cover back on). 

4 

When installing the cover, ensure that no debris or dust adheres to the gasket. 

5) Turn on the radar and perform the necessary operation checks. 

4-25


4.3.2 Magnetron replacement (M1568BS) 







1) Remove the covers from the right (starboard) 

side (see Section 4.3.1, page 4-24) and loosen 

the screws (four M4 screws) to remove the 

magnetron cover. 

Magnetron cover 

Loosen the 

four screws. 

2) Make sure there is no charge remaining 

between J2101 pin 1 and J2101 pin 3 in 

the Modulator circuit board CPA-264. 

(Multimeter requires DC1000V input 

capability), and then remove the screws 

(two M4 screws) holding the magnetron 

cables (yellow and green) in place. 

Magnetron 

Remove the 

four screws. 

3) Remove the screws (four M4 screws) 

holding the magnetron in place, then 

replace the magnetron after cutting the 

leads (yellow and green) for the 

replacement magnetron to an appropriate 

length. 

Remove the 

green cable. 

Remove the 

yellow cable. 

Remove the 

two screws. 

4-26


Use a non-magnetic secrewdriver because the contact of the metal tool with the 

magnetron causes deterioration of its performance. 

4) After having replaced the magnetron, reassemble the unit by following the disassembly 

procedure in the reverse order. 


Extreme care should be taken to connect the leads (yellow and green) to the magnetron 

for prevention of contact with other parts or the casing. Contact may cause them to 

discharge. 

4 






adjustment (Refer to Section 7.1.4 of the instruction manual). 




3) Emit radio waves in long pulse range mode (48NM) for about 15 minutes and reopen 

the serviceman menu to perform tuning adjustment. 

Adjust the setting in the serviceman menu until the tuning indication bar on the display unit 

reaches the 8th calibration marking. 

With the test menu open, also make sure the magnetron current is shown between the 6th and 

9th calibration markings. 



4-27


4.3.3 Motor replacement (7BDRD0044A, 7BDRD0045A) 


• Single-ended wrench (width across flats 17 mm for 

M8 bolts) 

• Tools for removing the cover from the scanner unit (see Section 4.3.1, page 4-24) 


1) Remove the cover on the left (port) side 

(see Section 4.3.1, page 4-24) and remove 

the cables connected to the motor driver 

circuit board. 

Remove the 

four bolts. 

Remove the 

two cables. 

2) Remove the hexagonal bolts (four M8 bolts) 

and remove the motor. 

Motor 

3) Remove the hexagonal bolts (four M8 

bolts) and remove the installation plate 

from the motor. 

Motor driver circuit board 

Remove the 

four bolts. 

4) Attach the installation plate to the 

replacement motor. 

Do not forget to tighten the hexagonal bolts 

to an appropriate torque (210 kgf-cm) so 

they are free of looseness. 

Motor 

Installation plate 

4-28


5) Install the motor into the scanner unit. Press 

the motor against the protrusions of the arm 

fixed to the motor on which the arm extends 

through the wall of the casing, adjust it to 

minimize backlash, and fix it in place. 

Arm protrusions 

Tighten the 

four bolts. 

Do not forget to tighten the hexagonal bolts, to an 

appropriate torque (140 kgf-cm) so they are free 

of looseness. 

6) After having installed the motor, grease the 

gear wheel. 

7) After having replaced the motor, reassemble the 

unit following the disassembly procedure in the 

reverse order. 


Press 

Grease here. 

4 





4-29


4.3.4 Motor Control Power Circuit replacement (CBD-1779) 




unit(see Section 4.3.1, page 4-24) 


1) Remove the cover on the left (port) side (see 

Section 4.3.1, page 4-24), remove the cables 

and screws (three M4 screws) connected to 

the motor control power supply board and 

remove the metal plate to which the motor 

control power supply board is attached. 

2) Remove the cables connected to the motor 

control power supply board, remove the screws 

(four M4 screws), and replace the motor control 

power supply board. 

Remove the 

three screws. 

3) After replacing the motor control power supply 

board, follow the disassembly procedure in the 



cables. 


Remove the 

eight screws. 

1) Turn on the radar power supply. After the 

countdown is completed, start emission and check that the radar image appears without 

error. Check that you do not hear any unusual sound when the motor starts, rotates, and 

stops. 

4-30


4.3.5 Modulator Circuit replacement (CPA-264) 





M4 bolts) 





(starboard) side (see Section 4.3.1, page 4- 

24), remove the cables connected to the 

transmitter-receiver unit and the screws 

(three M5 screws) holding the 

transmitter-receiver unit in place, and 

remove the transmitter-receiver unit. 

Remove the 

five cables. 

4 

Remove the 

three screws. 

2) Loosen the screws (nine M4 screws) 

holding the cover in place, remove the 

screws (two M4 screws) holding the heat 

radiation plate in place, and remove the 

cover. 

Loosen the 

nine screws. 

Remove the 

two screws. 

4-31


3) Remove the cables connected to the 

modulator circuit board, then remove the 

screws (five M4 screws) holding the 

modulator circuit board in place and the 

spacer (one 7 mm (nominal) spacer), and 

replace the modulator circuit board. 

Remove the 

spacer. 

Remove the 

five screws. 

4) After replacing the Modulator circuit 

board, assemble the unit in the reverse 

order of the disassembly procedure. 

Do not forget to tighten the bolts and screws, 

and do not forget to reconnect the cables. 

Remove the 

five cables. 






6.1.1, page 6-1). 

4.3.6 Modulator Unit replacement (NMA-550-1) 





M4 bolts) 



4-32










Remove the 

five cables. 

Remove the 

three screws. 

4 





cover. 

Loosen the 

nine screws. 

Remove the 

two screws. 

3) Remove the magnetron(see Section 

4.3.2, page 4-26). 


modulator circuit board, then remove 

the screws (two M4 screws) holding 

the waveguide. 

Remove 

4-33


5) Remove the screws (M4) holding the 

Modulator unit to replace the 

Modulator unit. (Three screws in the 

back) 

Remove 

6) After replacing the 

Modulator unit, assemble the 

magnetron on to the new 

Modulator unit. 

7) Assemble the Modulator unit 

in the reverse order of the 


Do not forget to tighten the bolts 

and screws, and do not forget to 

reconnect the cables. 

Magnetron 






6.1.1, page 6-1). 

4-34


4.3.7 Power Supply Circuit replacement (CBD-1682A) 














Remove the 

five cables. 

4 

Remove the 

three screws. 


power supply circuit board and the 

screws (five M4 screws) holding the 

power supply circuit board in place. 

Remove the power supply circuit board 

together with the metal fitting holding 

the power supply circuit board in place. 

Remove the 

five cables. 

4-35


3) Remove the screws (six M4 screws) 

holding the power supply circuit board in 

place and replace the power supply circuit 

board. 

Remove the 

six screws. 

If the square heat radiation sheet on the 

casing on the back of the power supply circuit 

board (the soldered side) is damaged, affix a 

new sheet to the replacement power supply 


4) After replacing the power supply circuit 

board, assemble the unit in the reverse order of the disassembly procedure. 





4.3.8 T/R Control Circuit replacement (CMC-1205R) 








back up the scanner unit data (emission time and motor rotation time). (Refer to Section 

7.4.4 of the instruction manual) 

If you do not back up the data, you will lose all data related to the scanner, such as 

magnetron usage time. 

4-36



side (see Section 4.3.1, page 4-24), remove 

the cables connected to the transmitterreceiver 

unit and the screws (three M5 

screws) holding the transmitter-receiver 

unit in place, and remove the transmitterreceiver 

unit. 

Remove the 

five cables. 

3) Remove the cable connected to the T/ 

R control circuit board and the seven 

screws (M4) to replace the T/R 


Remove the 

three screws. 

4 

Set the DIP switch and jumper pins of 

the T/R control circuit board to suite the 

NKE-2254 (see Section 2.5.6, page 2- 

25). 

Remove the 

seven screws. 

4) After replacing the T/R control circuit 

board, assemble the unit in the reverse order of the disassembly procedure. 








4-37


4.3.9 Receiver Unit replacement (NRG-162A) 











screws) holding the transmitter-receiver unit 

in place, and remove the transmitter-receiver 

unit. 

Remove the 

five cables 

Remove the 

three screws. 

2) Remove the screws (five M4 screws) 

holding the receiver in place and remove the 

cables connected to the receiver, then 

replace the receiver. 

Remove the 

five screws. 

3) Transfer the metal fitting from the removed 

receiver to the replacement receiver and fit 

the receiver into the casing. 

After replacing the receiving unit, assemble the 


procedure. 


the cables. 


4-38





Transmit radar signals on a long range (48NM) and open the serviceman menu to perform 

tuning adjustment (Refer to Section 7.1.3 of the instruction manual). Adjust the setting in the 

serviceman menu until the tuning indication bar on the display unit reaches the 8th calibration 

marking. 









4 



side (see Section 4.3.1, page 4-24), remove the 

cables connected to the transmitter-receiver 

unit and the screws (three M5 screws) 

holding the transmitter-receiver unit in 

place, and remove the transmitter-receiver 

unit. 

Remove the 

five cables. 

Remove the 

three screws. 

4-39


2) Loosen the two screws (M4) to remove the 

encoder together with the metal fixture. 

Encoder 

Metal fitting 

3) Remove the metal fixture and the gear 

wheel attached to the encoder. Put them onto 

the new encoder and put the encoder back 

into the unit. 




the cables. 

Remove 

the nut. 

Encoder 

Loosen the 

two screws. 

Metal fitting 

Remove the 

three screws. 




bearing adjustment (Refer to Section 7.1.4 of the instruction manual). 

4.3.11 Magnetron Fan replacement (7BFRD0002) 






4-40




side (see Section 4.3.1, page 4-24), remove the 

cables connected to the transmitter-receiver 

unit and the screws (three M5 screws) 

holding the transmitter-receiver unit in 

place, and remove the transmitter-receiver 

unit. 

Remove the 

five cables. 

2) Remove the cable for the fan that is 

connected to the T/R control circuit board. 

Remove the 

three screws. 

4 

3) Remove the four screws (M4) to replace the 

fan. 


4) After replacing the fan, assemble the unit in 

the reverse order of the disassembly 

procedure. 


the cables. 


Remove the 

four screws. 

1) Turn on the radar power supply. After the 

countdown is completed, start emission and check that the radar image appears without 

error. Check that no fan alarm comes up. 

4-41


4.3.12 Modulator Unit Fan replacement (7BFRD0002) 










screws) holding the transmitter-receiver 

unit in place, and remove the transmitterreceiver 

unit. 

Remove the 

five cables. 

Remove the 

three screws. 

2) Remove the cable for the fan that is 

connected to the T/R control circuit board. 


4-42






cover. 

Loosen the 

nine screws. 

Remove the 

two screws. 

4) Remove the screws (four M4 screws) 

holding the fan in place and replace the fan. 

Remove the 

four screws. 

4 

5) After replacing the fan, assemble the unit in 

the reverse order of the disassembly 

procedure. 


the cables. 




4-43









1) Remove the cover on the right (starboard) side (see Section 4.3.1, page 4-24).Remove 

the metal fixture that is mounted on the motor control power supply board CBD-1779 

(see Section 4.3.4, page 4-30). 

2) Remove the cable connected to J1503 in the 

motor control power supply. 

CFA-257 


resistors to replace the brake circuit (CFA-257: 

resistors with cables). 

Remove 

2 screws. 

4) After replacing the brake circuit, assemble the 


procedure. 


cables. 

J1503 

CBD-1779 




4-44



4 

4-45

INDEX > 4.Replacement Procedure > 4.4 Scanner Unit NKE-2103 (JMA-5312-6/6HS) 

4.4 Scanner Unit NKE-2103 (JMA-5312-6/ 

6HS) 




A wrench (width across flats 13 mm, for M8 screws) 

• Tools used in each part replacement procedure. 


1) Before beginning work, turn off the safety 

switch on the bottom of the scanner unit. 

Bow direction 

2) Loosen the hexagonal bolts (four bolts) 

and open the upper cover until the stopper of the 

stay operates. 

Turn off the 


Stay 

When closing the upper cover, release the stay stopper 

and then tighten the cover. 

3) Replace the necessary part(s) following the 

procedures contained in subsequent sections. 

When replacing a part, be careful not to lose any of the 

removed screws or metal fittings. 

Loosen the four 

hexagonal bolts. 

4) Replace the necessary part(s) following the procedures contained in subsequent 

sections. 

When replacing a part, be careful not to lose any of the removed screws or metal fittings. 

5) Turn on the radar and perform the necessary operation checks. 

4-46


4.4.2 Magnetron replacement (MAF1565N) 







1) Open the upper cover (see Section 4.4.1, page 4-46), 

loosen the screws (four M4 screws), remove the 

transmitter-receiver unit cover, and remove the cables 

connected to the transmitter-receiver unit (ten cables). 

Slide the cover of the transmitter-receiver unit to remove 

it. 

Slide the cover. 

4 

Loosen the 

four screws. 

2) Loosen the bolts (five M5 bolts) and 


Slide the transmitter-receiver unit upward 

to remove it. 

Slide the unit. 

Tighten the 

five bolts. 

4-47


3) Remove the screws (six M4 screws) holding 

the magnetron in place and replace the 

magnetron. 

Nut plate 

Remove the 

six screws. 

Use a non-magnetic secrewdriver because the 

contact of the metal tool with the magnetron 

causes deterioration of its performance. 

4) Cut the leads (yellow and green) for the 

replacement magnetron to an appropriate 

length, then tighten the screws and fix the 

cables in place. 

Magnetron 

Green cable 

Yellow cable 

After having replaced the magnetron, reassemble the unit by following the disassembly 



Extreme care should be taken to connect the leads (yellow and green) to the magnetron 

for prevention of contact with other parts or the casing. Contact may cause them to 

discharge. 






adjustment. 




3) Emit radio waves in long pulse range mode (48NM) for about 15 minutes and reopen 

the serviceman menu to perform tuning adjustment. 

Perform the adjustment in the serviceman menu until the tuning display bar on the display unit 

reaches the 8th calibration mark. 

With the test menu open, also make sure the magnetron current is shown between the 4th and 

7th calibration markings. 



4-48


4.4.3 Motor replacement (7BDRD0048) 




• Single-ended wrench (width across flats 10 mm 

for M6 bolts) 




1) Open the upper cover (see Section 4.4.1, page 4-46) 

to remove the transmitter-receiver unit (see Section 

4.4.2, page 4-47). 

Remove the 

four bolts. 

4 

2) Remove the hexagonal bolts (four M6 bolts) and 

remove the motor. Grease the gear wheel of the 

replacement motor and place it in the casing. Do not 

forget to tighten the hexagonal bolts to an appropriate 

torque (72 kgf-cm) so they are free of looseness. 

3) After having replaced the motor, reassemble the unit following the disassembly 



Clamp the cables so they do not interfere with the rotation of the motor's rotors. 





4-49


4.4.4 Motor Control Power Circuit replacement (CBD-1779) 







1) Open the upper cover (see Section 4.4.1, 

page 4-46) to remove the transmitterreceiver 

unit (see Section 4.4.2, page 4- 

47). 

2) Remove the cables and screws (eight M4 

screws) connected to the motor control 

power supply board, and replace the motor 

control power supply board. 

Remove the 

eight screws. 

3) After replacing the motor control power supply board, assemble the unit in the reverse 






4-50


4.4.5 Modulator Circuit replacement (CME-363) 







1) Open the upper cover (see Section 4.4.1, 

page 4-46) to remove the transmitter-receiver 

unit (see Section 4.4.2, page 4-47). 

4 

2) Remove the screws (nine M4 screws) holding 

the modulator circuit board in place and 

remove the cables connected to the 

modulator circuit board, then replace the 

modulator circuit board. 

If you are reusing the heat radiation plate on the 

modulator, be sure to install the thermal 

insulation sheet between TR17, TR18, and the 

heat radiation plate so that it is straight. 

Remove the 

nine screws 

(M4). 

3) After replacing the Modulator circuit board, 

assemble the unit in the reverse order of the disassembly procedure. 





Transmit radar signals on a long range (48NM) and open the test menu to make sure the 

magnetron current is shown between the 4th and 7th calibration markings (see Section 6.1.1, 

page 6-1). 

4-51


4.4.6 Power Supply Circuit replacement (CBD-1783) 








1) Open the upper cover (see Section 4.4.1, page 4-46) to remove the transmitter-receiver 


2) Remove the cables and screws (six M4 

screws) and remove the power supply unit 

from the transmitter-receiver unit. 

3) Remove the screws (six M4 screws and 

two M3 screws), and remove the power 

supply circuit board from the installation 

plate. 

Remove the 

six screws. 

Remove the 

two screws 

(M3). 

Remove the 

six screws 

(M4). 

4) After replacing the power supply circuit 

board, assemble the unit in the reverse 


Do not forget to tighten the screws and 

connect the cables. 

If the square heat radiation sheet on the 

casing on the back of the power supply circuit board (the soldered side) is damaged, affix a 

new sheet to the replacement power supply circuit board. 

4-52


4.4.7 Receiver Unit replacement (NRG-610) 





for M4 bolts) 




back up the scanner unit data (emission time and motor rotation time). (Refer to Section 

7.4.4 of the instruction manual) 

4 



unit (see Section 4.4.2, page 4-47). Remove the magnetron (see Section 4.4.2, page 4- 

47). 

3) Remove the M4 screw near the magnetron. 

Remove the 

screw (M4). 

4-53


4) Remove the screws (three M4 screws) on the 

motor control power supply side, and remove 

the microwave transmission circuit from the 

chassis. 

Motor control power 

supply circuit 


microwave transmission circuit to remove it 

from the installation plate. 

Remove the 

three screws 

(M4). 

6) Remove the screws (four M4 screws) holding 

the receiver in place and replace the receiver. 

Remove the 

two screws 

(M4). 

7) After having replaced the receiver, reassemble the 

unit by following the disassembly procedure in the 



cables. 

Remove the 

four screws 

(M4). 

After having replaced the receiver, reassemble the transmitter-receiver unit taking care to 

ensure good fitting. If the fitting is poor, loosen the screws and readjust the unit. 







4-54







for M4 bolts) 






4 


encoder to remove it from the housing. 

Loosen the 

screw (M4). 

Encoder 

3) Remove the metal fixture and the gear wheel 

attached to the encoder. Put them onto the new 

encoder and put the encoder back into the unit. 

Remove the 

screw (M4). 

Remove the 

nut. 

Metal fitting 




the cables. 

Encoder 

Remove the 

three screws. 




bearing adjustment (Refer to Section 7.1.4 of the instruction manual). 

4-55









1) Open the upper cover (see Section 4.4.1, page 4-46), remove the transmitter-receiver 

unit(see Section 4.4.2, page 4-47). 

2) Remove the cable connected to J1503 in the motor 

control power supply. 

Remove 2 screws. 

3) Remove the two screws (M3) holding the resistors 

to replace the brake circuit (CFA-257: resistors 

with cables). 

CFA-252 

J1503 

4) After replacing the brake circuit, assemble the unit 

in the reverse order of the disassembly procedure. 


cables. 

CBD-1779 




4-56



4 

4-57

INDEX > 4.Replacement Procedure > 4.5 Display Unit : LCD Monitor NWZ-173 

4.5 Display Unit : LCD Monitor NWZ-173 

4.5.1 Bezel Kit replacement (MPXP43590) 

This kit includes four parts: Bezel for 19 

inch monitor unit, AR filter for Radar, JRC 

Logo and round shape acrylic sheet. 

JRC Logo 

Do not touch the LCD screen directly with your 

fingers. 

AR Filter 

Do not touch the AR filter directly with your 

fingers. 

Bezel 

Round shape 

acrylic scheet 

Perform the replacement work on a soft cloth to 

avoid damage to the LCD screen and other parts. 


• A Phillips screwdriver for M4 screws 


• A hexagonal wrench (1.5 mm) 


1) Use the hexagonal wrench (1.5 mm) to loosen 

the hexagonal socket head screw to remove the 

knob and rubber bushing. 

2) Remove the screws (M6) from the four corners 

and displace the bezel. 

Remove 

4-58


3) Remove the screws (M6) from the four 

corners and displace the bezel. Remove the 

brightness adjustment circuit cables and 

remove the bezel. 

Remove the rubber packing (around the AR 

filter), and put on the new vezel. 

Remove 

Note that the cables 

are connected . 

4 

4) Install the Bezel kit in the reverse order of 

the procedures (1) to (3) to remove the bezel. 

5) Attach the rubber bushing to the knob shaft. 

6) Turn the brightness knob to make sure the 

brightness can be changed between the 

minimum and the maximum levels. 

Attachment direction of the bushing 


1) Make sure the knob rotates smoothly. 

2) Make sure you feel the knob click when it is pressed. 

3) After completing the replacement procedures, start the system to make sure that images 

are displayed properly. 

4) Turn the brightness knob to make sure the brightness can be changed between the 


4-59


4.5.2 LCD Panel replacement (CML-771) 

Do not touch the LCD screen directly with your fingers. 

Do not touch the AR filter directly with your fingers. 

Perform the replacement work on a soft cloth to avoid damage to the LCD screen and 

other parts. 




• A pair of nippers 


1) Remove the screws (M6) from the four 

corners and displace the bezel. Remove the 

brightness adjustment circuit cables and 

remove the bezel. 

Remove 



4-60


2) Remove ten M4 screws. 

Remove 

3) Displace the module and remove the three 

cables. 



4 

4) Remove the unit. 

Power cable 

Dsub 9p 

RGB 

Dsub 15p 

Power cable (You will need to cut the cable 

band.) 

Cut the 

cable band . 

4-61


5) Assemble the module in the reverse order of 

disassembly. 

6) Check that the module is placed in the proper 

position and a proper space is maintained 

under the module. Also check the pull-out 

position for the brightness adjustment cables. 

Tighten the ten M4 screws evenly. 

Cable pullout 

position 

7) Attach the LCD operation circuit cable. Check the gasket position. Make sure the 

brightness adjustment cables are not pinched before attaching the bezel. 

8) Tighten the screws at the four corners. 






4-62


4.5.3 Brilliance Control Circuit replacement (CCK-989) 

[Note] 




other parts. 

4 


• A Phillips screwdriver for M4 and M6 screws 


• A hexagonal wrench (1.5 mm) 


1) Use the hexagonal wrench (1.5 mm) to loosen 

the hexagonal socket head screw to remove the 

knob and rubber bushing. 

2) Remove the screws (M6) from the four corners 

and displace the bezel. 

Remove 

3) Remove the LCD operation cable before 

removing the bezel. Refer to the procedures described in Section 4.5.2, page 4-60. 

4-63


4) Remove the two tapping screws to remove the 


5) Make sure that the circuit board's connector is 

facing up. Attach the circuit board using the two 

tapping screws. Check that the slide switch is in 

the "INT" position. 

Remove 

6) Connect the cable and the bezel. 

Shift the slide 

switch to "INT". 

7) Attach the rubber bushing to the knob shaft. 

8) Turn the brightness knob to make sure the 

brightness can be changed between the 



1) Make sure the knob rotates smoothly. 

Attachment direction of the bushing 

2) Make sure you feel the knob click when it is 

pressed. 





4-64


4.5.4 Interface Circuit Board replacement (CMH-2227) 

[Note] 




other parts. 

4 


• A Phillips screwdriver for M4 and M6 screws. 


• A socket wrench (5 mm across flats) 


1) Follow the procedures provided in Section 

4.5.2, page 4-60 to remove the LCD unit. 

CBP-173A 

CBF-38 

CMH-2227 

4-65


2) Remove the four screws (M3) and remove the 

mesh cover. 

3) Remove the cable and eight screws (M3), and 

remove the circuit board. 

Remove 

Remove 

4) Remove the fitting screws from the DVI and 

DSUB connectors and remove the shield plate. 

5) Install the circuit in the reverse order of the 

disassembly. There are two types of fitting 

screws, so be sure to use them appropriately 

(the shorter screw is for the DVI connector). 

6) Follow the procedures provided in Section 

4.5.2, page 4-60 to install the LCD unit. 




4-66


4.5.5 Inverter Circuit replacement (CBF-38) 

[Note] 




other parts. 


4 

• A Phillips screwdriver for M4 screws、6mm 用 



1) Follow the procedures provided in Section 4.5.2, page 4-60 to remove the LCD unit. 

2) Remove the five cables. 

3) Remove the six screws (M6) and remove the 

circuit. 

Remove 

The pink part 

faces inside. 

4) Install the circuit in the reverse order of the 

removal. Check the cable colors and use adhesive tape. 

5) Follow the procedures provided in Section 4.5.2, page 4-60 to install the LCD unit. 






4-67


4.5.6 Blower Circuit replacement (CBP-173A) 

[Note] 




other parts. 


• A Phillips screwdriver for M4 screws、6mm 用 



1) Follow the procedures provided in Section 4.5.2, page 4-60 to remove the LCD unit. 

2) Remove the two screws (M3). 

Remove 

3) Remove the cable and the fan. 

4) Install the fan in the reverse order of the 

removal. 

5) Follow the procedures provided in Section 4.5.2, page 4-60 to install the LCD unit. 






3) Check that no fan alarm comes on. 

4-68

INDEX > 4.Replacement Procedure > 4.6 Display Unit : Radar Process Unit NDC-1417 

4.6 Display Unit : Radar Process Unit NDC- 

1417 

4.6.1 Power Supply Circuit (NBD-818A) 

Before replacing the power supply unit, remove the power supply connector of the 

process unit. 


Phillips screwdriver for 3 mm screws 

4 


1) Remove the four fixing screws. 

(Use the Phillips screwdriver for 3 mm 

screws.) 

Remove 

2) Pull out the power supply unit 

at an angle, being careful not to 

pull the cable too much. 

Be careful not to pull 

the cable too much 

4-69


3) Remove the four connectors connected to 

the power supply circuit and replace the 

power supply unit. 

Remove 

4) Install the new power supply unit 

following the disassembly procedure in 

the reverse order. 


1) Check that the system starts up properly. 

2) Emit radar waves and check to make sure the radar image is correctly displayed. 

4.6.2 I/F Unit replacement (NQA-2123) 




1) Remove the four screws at the top of the 

process unit cover and the three screws 

on each side to remove the process unit 

cover. (Use the Phillips screwdriver for 3 

mm screws.) 

4-70


2) Loosen the six screws holding the terminal 

board in place. (Use the Phillips 

screwdriver for 3 mm screws.) 

Loosen 

3) Remove the connectors connected to the 

terminal board circuit board and slide the 

terminal board slightly and then lift it out 

of the process unit. 

4 

Remove 

Lift after 

sliding 

4) Remove the seven connectors connected to 

the radar process circuit and the power supply 

circuit. 

Remove 

4-71


5) Turn over the radar process unit, remove the 

two screws holding the interface unit in place, 

and remove the interface unit. (Use the Phillips 


Remove 

6) Remove the five cables connected to the 

terminal board circuit and the two 

screws holding the terminal board in 

place, and attach them to the new 

interface unit. 

Remove and 

attach to new 

input/output unit 

7) Install the new interface unit following 

the disassembly procedure in the reverse 

order. 


Remove and 

attach to new 

input/output unit 


2) Check that no error message appears. 

3) After replacing the unit, check that the radar image is correctly displayed. 

4) Check that the connected external sensors (such as the true azimuth, speed, latitude / 

longitude, and AIS sensors) are correctly displayed. 

4-72


4.6.3 Radar Process Circuit replacement (CDC-1332) 

Back up the necessary settings data onto a memory card before performing the 

replacement. 

After replacing the assembly, all items on menu will be fctory default setting. 



for 2.6 mm screws 

4 

Socket wrench for 5.5 mm bolts 



back up the data. (Refer to Section 7.4.3 of the instruction manual) 

If you do not back up the data, you will lose all display unit data. 

2) Refer to Section 4.6.2, page 4-70 and remove the terminal board. 

3) If there are an ARPA/ATA processing circuit board and AIS processing circuit board, 

refer to Section 4.6.5, page 4-78 and Section 4.6.6, page 4-79 to remove these circuit 

boards. 

4-73


4) Remove the four screws holding the fan fixture, 

remove the fan connectors, and remove the fan 

fitting. (Use the Phillips screwdriver for 3 mm 

screws.) 

Remove 

Remove 

5) Remove the screw holding the metal fitting that 

protects the process unit circuit breaker. (Use the 

Phillips screwdriver for 2.6 mm screws.) 

Remove 

6) Remove the two screws holding the process unit 

circuit breaker, and remove the circuit breaker. 

(Use the Phillips screwdriver for 3 mm screws.) 

Remove 

7) Remove the five connectors connected to the 

radar process circuit. 

Remove 

4-74


8) Remove the 13 hexagonal supports holding the radar 

process circuit in place. (Use the socket wrench for 

5.5 mm bolts.) 

9) Remove the six screws holding the radar process 

circuit board in place and replace the radar process 

circuit board. (Use the Phillips screwdriver for 3 

mm screws.) 

10) Check that the DIP switch settings on the new radar 

process circuit are the same as the old one. 

Remove 

4 

11) Reassemble the unit following the disassembly 

procedure in reverse. 




DIP SWITCH 

3) Restore the data you backed up. (Refer to Section 7.4.3 of the instruction manual) 




4-75


4.6.4 Battery replacement (CR2032) 


• Flat tip screwdrivers for 6 mm screws 


The battery disassembly requires a non-conductive 

flat tip screwdriver. 



2) Insert the non-conductive flat tip screwdriver for adjustment between the battery and 

the battery holder and lift the battery up. 

3) Insert the non-conductive flat tip screwdriver for 

adjustment to the location shown in the figure 

below and slide the battery sideways to remove 

the battery. 

4-76


4) Check the polarity of the battery. Make sure that 

the battery's positive (+) side is facing up. 

5) Slide the battery sideways into the battery holder. 

6) Make sure that the battery is inserted fully. 


1) Check that no error message comes up. 

2) Check that the system starts up normally. 

3) Open the test menu and confirm the battery voltage. (see Section 6.1.2, page 6-2). 

4 

[Note] 

If you installed the battery with the wrong polarity, remove the battery immediately and 

do not use the same battery again. 

During the procedures, do not put the battery on any circuit board or conductive item. 

To dispose of a used battery, follow the instructions provided in Chapter 10 of the 

Instruction Manual. 

4-77


4.6.5 ARPA/ATA Process Circuit replacement (NCA-877WA/877A) 





2) You will see the ARPA or ATA process 

circuit on the radar process circuit. 

3) Remove the four screws holding the ARPA or 

ATA process circuit in place, and lift out the 

ARPA or ATA process circuit vertically to 

replace it. (Use the Phillips screwdriver for 3 mm 

screws.) 

ARPA Process 

circuit 

Remove 




Remove 



3) Refer to Section 5.2.7 II in the instruction manual to generate a false target, and check 

that you can acquire the target. 

4) Check that the numerical target data acquired is correctly displayed. 

4-78


4.6.6 AIS Process Circuit replacement (NQA-2103) 



Socket wrench for 5.5 mm bolts 



2) You will see the AIS process circuit on the 


4 

3) Remove the three screws holding the AIS 

process circuit in place and remove the screws 

holding the coating clip in place. (Use the Phillips 


AIS Process 

circuit 

Remove 

Remove 

4-79


4) Remove the hexagonal support holding the 

coating clip in place, and lift the AIS process 

circuit out vertically and replace it. (Use the 

socket wrench for 5.5 mm bolts.) 

Remove 






3) Check that the AIS button appears in the Target Information display area. 

AIS button 

4-80


4.6.7 GYRO Interface Unit replacement (NCT-59A) 





process unit cover and the three screws on 

each side to remove the process unit 


mm screws.) 

4 

2) Remove the connected cable for the gyro 

log. 

Remove 

3) Loosen the six screws holding the terminal 

board in place. (Use the Phillips screwdriver 

for 3 mm screws.) 

Loosen 

4-81


4) Remove the connectors connecting the side of 

the process unit to the GYRO LOG I/F circuit 

board. 

Processing unit side 

Remove 


terminal board and slide the terminal board 

slightly and then lift it out of the process 

unit. 

Remove 

Lift after 

sliding 

6) Loosen the six screws holding the 

GYRO I/F in place, and slide the 

GYRO I/F sideways to remove it. 

(Use the Phillips screwdriver for 3 

mm screws.) 

Slide 

Loosen 

7) Remove the six screws holding the 

GYRO I/F circuit in place, remove the 

GYRO I/F circuit, and replace it. (Use the 

Phillips screwdriver for 3 mm screws.) 

8) Check the DIP switch settings on the new 

GYRO I/F circuit board. 

Remove 

4-82


9) Check the fuses of the new GYRO I/F circuit board. 

10) Reassemble the unit following the disassembly procedure in reverse. 

11) Turn on the system's power and set the true azimuth. 


1) Check that no error message is displayed. 

2) Check that the true azimuth is correctly tracked. (In terms of the resolution and rotation 

direction.) 

4 

4.6.8 GYRO Interface Circuit Fuses replacement (MF51NR-0.5A) 


Flat screwdriver for 3 mm screws 




process unit cover and the three screws 

on each side to remove the process unit 


mm screws.) 

4-83


2) You will see four fuse holders in a row. 

Fuse 

holders 

3) Insert the flat screwdriver into the top of a fuse 

holder and turn the screwdriver while pressing 

down to remove the top. (Use the flat screwdriver 

for 3 mm screws.) 

Press and 

turn 

4) Remove the fuse to check that it is not blown, and if 

it is, replace it with a new fuse. 

5) Check the other three fuses in the same way. 

6) Reassemble the unit following the disassembly procedure in 

reverse. 

7) Turn on the system's power and set the true azimuth. 


1) Check that no error message is displayed. 

2) Check that the true azimuth is correctly tracked. (In terms of the resolution and rotation 

direction.) 

If the fuse is blown soon after being replaced, it is likely that the GYRO I/F circuit board 

is faulty. 

4-84


4.6.9 Terminal Board replacement (CQD-1937A) 





process unit cover and the three screws on 

each side to remove the process unit 


mm screws.) 

4 

2) Remove all the connectors and cables 

connected to the terminal board circuit board. 

Remove 

3) Remove the seven screws holding the terminal 

board circuit in place, and replace it. (Use the 




Remove 

4-85








4.6.10 Radar Process Unit Fan replacement (7BFRD0005) 





2) Remove the connectors connected to the input / 

output circuit board. 

Remove 

3) Remove the four screws holding the fan in 

place, and replace the fan. (Use the Phillips 


Remove 






Remove 

4-86

INDEX > 4.Replacement Procedure > 4.7 Display Unit : Operation Unit NCE-5171 

4.7 Display Unit : Operation Unit NCE-5171 

4.7.1 Oeration Circuit replacement (CCK-979) 


Allen wrench 1.5 mm 



1) Loosen the screws that hold the knobs in 

place, and remove the six knobs. (Use the 

1.5 mm Allen wrench.) 

4 

2) Remove the seven screws to open the rear 


mm screws.) 

Remove 

Remove 

3) Remove the four connectors and remove 

the rear cover. 

Remove 

4-87


4) Remove the twenty screws to open 

the front cover. (Use the Phillips 


5) Peel off the key rubber, remove the 

connectors, and replace the board. 

Peel off 

Remove 

6) Reassemble the operating unit 

following the disassembly procedure 

in reverse. When you put the front 

cover back on, be careful that all the 

keys of the key rubber fit into the 

holes in the cover. 




3) Refer to Section 8.3.1 III in the instruction manual to test the keys, buzzers, and lights, 

and make sure there are no problems. 

4) Check that the knobs turn smoothly. 

5) Check that the knobs click when you push them. 

4.7.2 Interface Circuit replacement (CQC-1204) 



4-88





mm screws.) 

Remove 

2) Remove the two connectors and remove 

the rear cover. 

Remove 

Remove 

4 

3) Remove the two screws holding the I/F 

circuit in place, and replace it. (Use the 


4) Reassemble the unit following the 

disassembly procedure in reverse. 

Remove 






4) Check that the PS2 mouse operates correctly. 

4-89


4.7.3 Trackball replacement (CCK-1000) 






mm screws.) 

Remove 

Remove 


trackball, and replace the track ball. 

3) Reassemble the unit following the 

disassembly procedure in reverse. 



Remove 




4-90

Section 5 

Updating Programs 

5.1 Main program updating procedures ....................................................5-1 


5.1.2 Updating procedures ................................................................................ 5-1 

5.2 AIS processing circuit updating procedure .......................................5-2 


5.2.2 Updating procedure .................................................................................. 5-2 

5.3 Version check procedures ...................................................................5-3

INDEX > 5.Updating Programs > 5.1 Main program updating procedures 

5.1 Main program updating procedures 

5.1.1 Required items 

1) A CompactFlash® 1 card 

2) New program file (file name: 5300prg_V##**.bin) 

(##** indicates version of the program, Ver. ##.**) 

5.1.2 Updating procedures 

1) Copy the new program file to the root directory of the 

CompactFlash® card. 

2) Insert the Compact Flash card 

with PC card adapter to card 

slot 2 (upper slot) of the radar 

process unit (NDC-1417). 

5 

3) Power on the radar display 

unit. 

4) After the program update confirmation screen appears, press the 

ENT button of the keyboard (if you do not want to update the 

program, press the CLR/INFO button). 

5) After the "Please extract a card and reboot”message appears, 

shut off the power and remove the CompactFlash® card. 

1.CompactFlash® is a registered trademark of SanDisk Corporation in the U.S. 

5-1

INDEX > 5.Updating Programs > 5.2 AIS processing circuit updating procedure 

5.2 AIS processing circuit updating 

procedure 

5.2.1 Required items 

1) A CompactFlash® 1 card 

2) New program file (file name: AIS_PROC_V##**.bin) 

(##** indicates version of the program) 

5.2.2 Updating procedure 

1) Copy the AIS processing circuit program file to the root directory 

of the CompactFlash® card. 

2) Insert the Compact Flash card 

with PC card adapter to card 

slot 2 (upper slot) of the radar 

process unit (NDC-1417). 

3) Power on the radar display 

unit. 

4) Press the RADAR MENU key for 2 seconds or longer. 

5) After the "Code Input" screen comes up, input "53001" and click 

the ENT button. 

6) After the Utilities menu comes up, select [7. AIS] → [1. AIS PROC 

Program Update]. 

7) After the confirmation dialog box appears, select [1. Yes]. 

8) After the program updating progress indicator reaches 100% and 

the confirmation dialog box disappears, the upgrading is 

complete. 


5-2

INDEX > 5.Updating Programs > 5.3 Version check procedures 

5.3 Version check procedures 

1) From the menu, select [Main] → [9. Test Menu] → [6. System 

Information]. 

2) Put the cursor over the Exit button, and click the right button of 

the track ball five times. 

3) The software version appears as [Indicator] [AIS PROC] in the 

[System Information]. 

Indicator: Main program version 

AIS PROC: AIS process circuit software version 

5 

5-3

INDEX > 5.Updating Programs > 5.3 Version check procedures 

5-4

Section 6 

Troubleshooting 

6.1 Operation Tests .....................................................................................6-1 

6.1.1 Open the Test Menu (self test) ................................................................. 6-1 

6.1.2 Self-diagnosis function (self test) ........................................................... 6-2 

6.1.3 Display test (Monitor Test) ....................................................................... 6-4 

6.1.4 Operation Unit test (Keyboard Test) ....................................................... 6-4 

6.1.5 Performance Monitor (MON Display) ...................................................... 6-5 

6.1.6 System alarm log display (System Alarm Log) ...................................... 6-6 

6.1.7 System information display (System Information) ................................ 6-6 

6.2 Scanner Unit error messages ..............................................................6-7 

6.2.1 TXRX (SSW Off) ......................................................................................... 6-7 

6.2.2 TXRX (MHV) ............................................................................................... 6-7 

6.2.3 TXRX (Reverse) ......................................................................................... 6-9 

6.2.4 TXRX (Heater) ............................................................................................ 6-9 

6.2.5 TXRX (Video) ........................................................................................... 6-11 

6.2.6 TXRX (Trigger) ......................................................................................... 6-12 

6.2.7 TXRX (Fan1) ............................................................................................. 6-13 

6.2.8 TXRX (Fan2) ............................................................................................. 6-13 

6.2.9 TXRX (AZI) ............................................................................................... 6-14 

6.2.10 TXRX (HL) ................................................................................................ 6-16

6.2.11 TXRX (Data) ............................................................................................. 6-17 

6.3 Display Unit error messages ..............................................................6-19 

6.3.1 Keyboard (Data), Keyboard (Data2) ....................................................... 6-19 

6.3.2 ISW (Data) ................................................................................................ 6-19 

6.3.3 PROC (Trigger) ........................................................................................ 6-20 

6.3.4 PROC (AZI) ............................................................................................... 6-21 

6.3.5 PROC (HL) ................................................................................................ 6-22 

6.3.6 PROC (Video) ........................................................................................... 6-23 

6.3.7 PROC (INT) ............................................................................................... 6-24 

6.3.8 Fan (LCD) ................................................................................................. 6-25 

6.3.9 TT (Boot) .................................................................................................. 6-25 

6.3.10 ASIC1 to RADAR ..................................................................................... 6-26 

6.3.11 AIS PROC (Data) ...................................................................................... 6-26 

6.3.12 GYRO I/F (Data) ....................................................................................... 6-27 

6.3.13 Battery Low .............................................................................................. 6-27 

6.3.14 Battery Dead ............................................................................................ 6-28 

6.4 Error messages related to external input/output .............................6-29 

6.4.1 GYRO I/F (GYRO) .................................................................................... 6-29 

6.4.2 Heading (Data) ......................................................................................... 6-29 

6.4.3 Position (Data) ......................................................................................... 6-30 

6.4.4 Date (Data) ............................................................................................... 6-31 

6.4.5 GPS (Status) ............................................................................................ 6-32 

6.4.6 Speed (Log) ............................................................................................. 6-32 

6.4.7 Speed (2AXG), Speed (2AXW) ................................................................ 6-33 

6.4.8 Speed (GPS) ............................................................................................ 6-34 

6.4.9 AIS (Data) ................................................................................................. 6-34 

6.4.10 AIS Alarm *** ............................................................................................ 6-35 

6.4.11 Depth (Data) ............................................................................................. 6-36 

6.4.12 TEMP. (Data) ............................................................................................ 6-37 

6.4.13 Wind (Data) .............................................................................................. 6-38 

6.4.14 Current (Data) .......................................................................................... 6-39 

6.4.15 ROT (Data) ............................................................................................... 6-40 

6.4.16 RSA (Data) ............................................................................................... 6-41 

6.5 Sample Problems : Internal Circuit ...................................................6-42 

6.5.1 Screen remains dark even when brightness dial turned to 

maximum ................................................................................................ 6-42 

6.5.2 The brightness nonuniformity is visible on the LCD panel at night 

condition ................................................................................................. 6-43 

6.5.3 Screen sometimes shows display and sometimes not ....................... 6-43 

6.5.4 The power can not be turned on ............................................................ 6-44 

6.5.5 Track ball does not move cursor ........................................................... 6-44 

6.5.6 "Scanner Rotating" message displayed, Scanner Unit does not 

stop when transmission stops ............................................................. 6-45 

6.5.7 Display unit layout shown on inter switch menu is mirror image of 

actual layout ............................................................................................ 6-45 

6.5.8 Displayed echo does not match distance / azimuth of actual ship .... 6-45 

6.5.9 Cannot use CompactFlash® card ......................................................... 6-46 

6.5.10 A line appears that you do not remember inputting. ........................... 6-47 

6.5.11 Cannot display initial acquisition mark ................................................ 6-47 

6.6 External equipment .............................................................................6-48 

6.6.1 Cannot connect to external equipment for NMEA output ................... 6-48 

6.6.2 Cannot display true bearing ................................................................... 6-49

6.6.3 Blurry image on the remote display ...................................................... 6-50 

6

INDEX > 6.Troubleshooting > 6.1 Operation Tests 

6.1 Operation Tests 

6.1.1 Open the Test Menu (self test) 

Periodically perform operation tests and promptly investigate any problems you discover. 

When performing tests, be particularly careful of high voltage, and beware of causing 

malfunctions due to measurement errors or inattention during measurement. It is 

extremely effective to keep notes of the results of tests and refer to them at the time of the 

next test. 

The system has a self-diagnosis function for inspecting the operating status inside 

the system. 

Open the test menu and perform self-diagnosis. 

1) Select the menu options shown below to open the test menu. 

Main 

→ 9. Test Menu 

2) Select the menu options shown below to open the test menu. 

6 

1. Self Test 1. Self-diagnosis function 

2. Monitor Test 2. Monitor test 

3. Keyboard Test 3. Operation unit test 

4. MON Display 4. Performance monitor 

5. System Alarm Log 5. Error logging display 

6. System Information 6. System information display 

7. Magnetron Current 7. Magnetron current display 

3) The content of the test appears. 

During transmission, the magnetron current appears as a bar graph. 

The normal values for each type of transmission equipment is as shown below (measured in 

the 48 nm range). 

10kW : 4th to 7th 



6-1


6.1.2 Self-diagnosis function (self test) 

Tests the memory, Scanner Unit, and communication line. 

1. Memory Test 1. Display unit internal memory test 

2. TXRX Test 2. Scanner Unit test 

3. Line Test 3. Communication line test 

4. Supply Voltage 4. Power supply voltage test 

1) Display unit internal memory test (Memory Test) 

Tests the operating status of the built-in memory. 

1. SDRAM SDRAM test 

2. SRAM SRAM test 

3. FLASH ROM Flash ROM test 

4. GRAPHIC Graphic test 

If there is no problem, "OK" appears; , there is a problem, "NG" appears. 

2) Scanner Unit test (TXRX Test) 

Tests the signal from the Scanner Unit. 

Safety Switch 

AZI Pulse 

HL Pulse 

MH Current 

Trigger 

Video 

Scanner Unit safety switch test 

Scanner Unit rotation signal test 

Ship heading signal test 

Modulator high voltage load current test 

Radar trigger signal test 

Radar image test 


When the system is on standby, ** appears. 

6-2


3) Communication line test (Line Test) 

Tests the communication with optional equipment and external navigation 

equipment. 

TXRX 

SIG.PROC 

TT 

GYRO I/F 

ISW 

Scanner Unit connection test 

Signal process circuit connection test 

Target tracking unit connection test 

GYRO I/F unit connection test 

Inter switch connection test 


The status display for any unconnected device is blank. 

4) Power supply voltage test (Supply Voltage) 

Tests the voltage of the internal power supply. 

Item Normal value 

6 

12V 11.0 - 12.2V 

5V 4.75 - 5.25V 

3.3V 3.14 - 3.46V 

Battery 2.5V or more 

6-3


6.1.3 Display test (Monitor Test) 

Tests the display. The test patterns appear on the display. 

1. Pattern1 All white 

2. Pattern2 1280×1024 dot black ground with white frame 

3. Pattern3 2 square frames, 2 circles, and 13 crosses (white lines 

on black ground) 

4. Pattern4 Screen filled with 9 dot x 9 dot "H" (white letter on 

black ground) 

5. Pattern5 Grayscale (16 gradations) 

6. Pattern6 Color bar 

7. Pattern7 VDR test pattern 

8. Pattern8 Color spec, ied in RGB shown 

Pressing any key returns the display to the normal screen. 

If the test patterns do not appear, there is a problem with the monitor. 

6.1.4 Operation Unit test (Keyboard Test) 

Tests the operation unit dials and switches. 

1. Key Test 1. Key test 

2. Buzzer Test 2. Buzzer test 

3. Light Test 3. Operation unit light test 

1) Key Test 

Tests the operation unit dials and switches. 

As you press each key, check that the color of the key of the operation unit 

displayed on the screen is reversed and the name of the key appears. 

6-4


2) Buzzer Test 

Tests the buzzer of the operation unit. 

The buzzer sounds. 

After a set period of time, the buzzer automatically goes off. 

3) Light Test 

Tests the light in the operation unit. 

The light in the operation unit gets progressively brighter in four stages. 

6.1.5 Performance Monitor (MON Display) 

Shows the status of the performance monitor. 

* Transmitter System Tests the transmitter attenuation. 

6 

Attenuation Value 

* Receiver System Tests the receiver attenuation. 

MON Pattern Range 

Attenuation Value 

When checking the transmitter attenuation, read the values one minute after opening this 

menu item. 

操作手順 

1) Turn the "VRM" dial to place the VRM at the farthest edge of the 

performance monitor pattern. 

The receiver attenuation appears for the Attenuation Value of the Receiver System. 

6-5


6.1.6 System alarm log display (System Alarm Log) 

When a system error occurs, the error name is shown with the color reversed. 

In addition, errors that have been cleared appear in a timeline. 

Pressing the Clear button on the log display screen clears the alarm log. 

6.1.7 System information display (System Information) 

Shows system information such as magnetron usage time and program version 

information. 

* Indicator Ver.**.** Display unit program version 

* TXRX Ver.**.** Scanner Unit program version 

* System No. No.**.** Display unit system number 

* TX Time 

X-Band **** hours 

S-Band **** hours 

X band transmitter 

transmitting time 

S band transmitter 

transmitting time 

* Motor Time **** hours Scanner Unit motor usage time 

* TXRX Total Time **** hours Scanner Unit usage time 

* Total Time **** hours Display unit usage time 

In a normal Scanner Unit, TX TIME shows either X band or the S band transmitting time. 

Both appear in the two-frequency Scanner Unit. 

6-6

INDEX > 6.Troubleshooting > 6.2 Scanner Unit error messages 

6.2 Scanner Unit error messages 

6.2.1 TXRX (SSW Off) 

[1] Content 

The safety switch in the Scanner Unit is off. Transmission is impossible when the 

safety switch is off. 

[2] Problem location 

[2]-1 Scanner Unit safety switch 

• Turn on the safety switch. 

• Check safety switch S101. 

[2]-2 T/R Control Circuit CMC-1205R in the Scanner Unit (NKE-2254/1130) 

• Check the insertion status of J1105 in T/R Control Circuit CMC-1205R 

• T/R Control Circuit replacement (CMC-1205R). (NKE-2254, see section 4.2.10, page 

4-14) 


4-36) 

6 

[2]-3 Scanner Unit installation cable 

• For the NKE-2103, check the Scanner Unit internal cable. 

W102,WS101 

[2]-4 Modulator Circuit CME-363 in the Scanner Unit (NKE-2103) 

• Check the insertion status of J202 and J210 in modulator circuit Modulator 

Circuit CME-363 

[2]-5 Receiver Unit NRG-610 in the Scanner Unit (NKE-2103) 

• Check the insertion status of J201 in I/F Amp Circuit CAE-529-1 

6.2.2 TXRX (MHV) 

[1] Content 

There is a problem with the high voltage power supply for the modulation circuit 

in the Scanner Unit. 

It is possible that the Power Supply Circuit or the modulation circuit is faulty. 

6-7



[2]-1 Modulation Circuit CPA-264 in Scanner Unit (NKE-2254/1130) 

• Check the insertion status of J2102 and J2101 in Modulation Circuit CPA-264. 

• Modulation Circuit replacement (CPA-264). (NKE-1130, see section 4.2.7, page 4-11) 

• Modulator Circuit replacement (CPA-264). (NKE-2254, see section 4.3.5, page 4-31) 

[2]-2 Power Supply Circuit CBD-1682A in Scanner Unit (NKE-2254/1130) 

• Check the insertion status of J1002 in Power Supply Circuit CBD-1682A. 

• Power Supply Circuit replacement (CBD-1682A). (NKE-1130, see section 4.2.9, 

page 4-13) 


page 4-35) 

[2]-3 T/R Control Circuit CMC-1205R in Scanner Unit (NKE-2254/1130) 

• Check the insertion status of P1111 in T/R Control Circuit CMC-1205R. 


4-14) 


4-36) 


• Check the insertion status of J202 and J205 in Modulator Circuit CME-363 

• Modulator Circuit replacement (CME-363). (see section 4.4.5, page 4-51) 


• Check the insertion status of J302 in I/F Amp Circuit CAE-529-1. 

[2]-6 Power Supply Circuit CBD-1783 (NKE-2103) 

• Check the insertion status of J1002 in Power Supply Circuit CBD-1783. 

• Power Supply Circuit replacement (CBD-1783). (see section 4.4.6, page 4-52) 

[2]-7 Internal cable in Scanner Unit 

• Check the cables in the Scanner Unit. 

W003, W107, W201 (NKE-2254/1130) 

W102,W104 (NKE-2103) 

6-8


6.2.3 TXRX (Reverse) 

[1] Content 

In the case of the radiator is subjected to external force of wind (corresponding 

wind speed is greater than 51.5m/s) that exceed the ability to drive the Scanner 

Unit, the Scanner Unit stop to drive the motor. Because a built-in overload 

protection circuit is activated. If the the Scanner Unit rotates by the wind in a 

counterclockwise direction, the TXRX[Reverse] alarm will be appeared, and stop 

the transmit the radar.The radar transmit normally when the wind has calm down, 

the equipment is not faulty. 

If the radar cannot transmit when the wind has calm down, there is a problem with 

the motor driving system in the Scanner Unit. In this case, check below. 


[2]-1 Relay filter circuit CSC-656 in Scanner Unit 

• Check the wiring of the power supply for the motor. 

• Relay Filter Circuit replacement (CSC-656). (see section 4.2.11, page 4-15) 

[2]-2 Motor driver 7EPRD0034(for 220VAC)/7EPRD0035(for 100VAC) in Scanner 

Unit (NKE-1130) 

• Check the wiring of the power supply for the motor. 

6 

• Motor Driver replacement (7EPRD0035, 7EPRD0034). (see section 4.2.4, page 4-8 

) 

6.2.4 TXRX (Heater) 

[1] Content 

There is a problem with the power supply for the magnetron heater in the Scanner 

Unit. 

It is possible that the power supply circuit, T/R Control Circuit CMC-1205R or 

modulation circuit is faulty. 






6-9



• Check the insertion status of J1003 in Power Supply Circuit CBD-1682A. 


page 4-13) 


page 4-35) 


• Check the insertion status of P1111 in T/R Control Circuit CMC-1205R. 


4-14) 


4-36) 


• Check the insertion status of J202, J205 and J206 in Modulator Circuit CME- 

363 





• Check the insertion status of J1002 and J1003 in Power Supply Circuit CBD- 

1783. 




W003, W107, W201 (NKE-2254/1130) 

W102, W103, W104 (NKE-2103) 

6-10


6.2.5 TXRX (Video) 

[1] Content 

There is a problem with the radar video signal output of the Scanner Unit. 

If TXRX (MHV) or TXRX (Heater) appears, address the problem there first. 

This message can appear even when the transmitter is not operating. Therefore, 

first check the magnetron current in the test menu to check whether the 

transmission function is operating properly or not. 

If there is a problem with the transmission function, it is possible that there is a 

fault in modulation circuit, power supply circuit, or T/R Control Circuit CMC- 

1205R. 

If the transmission function is operating properly, it is possible there is a problem 

with the receiver. 






6 


• Check the insertion status of J1003 in Power Supply Circuit CBD-1682A.。 


page 4-13) 


page 4-35) 


• Check the insertion status of J1111, J1103 in T/R Control Circuit CMC-1205R. 


4-14) 


4-36) 

[2]-4 Receiver Unit NRG-162A, NRG-229 in Scanner Unit (NKE-2254/1130) 

• Check the insertion status of J101 in Receiver Unit NRG-162A and NRG-229. 

• Check the insertion status of J1109 and J1110 in CMC-1205R. 

• Receiver Unit replacement (NRG-162A). (NKE-1130, see section 4.3.9, page 4-38) 

• Receiver Unit Replacement (NRG-229). (NKE-2254, see section 4.2.12, page 4-16) 

6-11



• Check the insertion status of J201, J205 and J206 in Modulator Circuit CME- 

363 




• Receiver Unit replacement (NRG-610). (see section 4.4.7, page 4-53) 



1783. 




W003, W005, W104, W001 (NKE-1125/2254/1130, NTG-3225/3230) 

W102, W103, W104 (NKE-2103) 

6.2.6 TXRX (Trigger) 

[1] Content 

There is a problem with the trigger signal output from the Scanner Unit. 

It is possible there is a problem with the T/R Control Circuit CMC-1205R. 




4-14) 


4-36) 


• Check the insertion status of J202 in Modulator Circuit CME-363 




[2]-4 Installation cable for Scanner Unit 

• Check the installation cable. 

6-12


6.2.7 TXRX (Fan1) 

[1] Content 

There is a problem with the modulator cooling fan in the Scanner Unit. 


[2]-1 Fan (modulator) (NKE-2254/1130) 


• Modulator Unit Fan replacement (7BFRD0002). (NKE-1130, see section 4.2.6, page 

4-10 ) 

• Modulator Unit Fan replacement (7BFRD0002). (NKE-2254, see section 4.3.12, 

page 4-42 ) 

6.2.8 TXRX (Fan2) 

[1] Content 

There is a problem with the motor cooling fan in the Scanner Unit. 

6 


[2]-1 Fan (motor and motor driver) (NKE-2254/1130) 


• Motor Driver Fan replacement (7BFRD0002). (NKE-1130, see section 4.2.5, page 4- 

9 ) 

• Magnetron Fan replacement (7BFRD0002). (NKE-2254, see section 4.3.11, page 4-40 

) 

• ) 

6-13


6.2.9 TXRX (AZI) 

[1] Content 

The antenna rotation signal is not being output from the Scanner Unit. When this 

message appears, radar transmission is forcibly stopped. 

There are two possible cases: 1) the motor is not rotating, and 2) the rotation 

signal is not being output. First, check that the motor is rotating. 

If the motor is not rotating and wind blow very strong, it remains possible that the 

motor driving system has not a problem. If the radiator is subjected to external 

force of wind (corresponding wind speed is greater than 51.5m/s) that exceed the 

ability to drive the Scanner Unit, the Scanner Unit stop to drive the motor. 

Because a built-in overload protection circuit is activated. In this case, the alarm is 

appeared, but the equipment is not faulty. The radar transmit normally when the 

wind has calm down less than or equal to 51.5m/s. (see section 2.3.1, page 2-6, section 

6.2.3, page 6-9) 

If the motor is not rotating, it is possible that there is a problem with the motor, 

relay circuit CSC-656, the installation cable, I/F unit NQA-2123. 

If the motor is rotating, it is possible there is a problem with the encoder or T/R 

Control Circuit CMC-1205R. 


[2]-1 Scanner Unit installation cable (NKE-1129/2254) 

• Check the Scanner Unit installation cable. 

TB103/TB203 φA,φB 

TB104/TB204 VERR/E 

TB103/TB202 U1/V1 

• Check the installation cable. (NKE-2103) 

[2]-2 I/F Unit NQA-2123 in Radar Process Unit 

• Check fuse F3 of NQA-2123 and replace it if it is blown. 

• Check the cables inside NQA-2123. 

W421,W422 

[2]-3 Motor in the Scanner Unit 

• Check the wiring of motor B101. 

• Motor replacement (MDBW10823). (NKE-1130, see section 4.2.3, page 4-6) 

• Motor replacement (7BDRD0044A, 7BDRD0045A). (NKE-2254, see section 4.3.3, 

page 4-28) 

• Motor replacement (7BDRD0048). (NKE-2103, see section 4.4.3, page 4-49) 

[2]-4 Scanner Unit Encoder 

• Check the wiring of encoder B102. 

• Encoder replacement (CHT-71A). (NKE-1130, see section 4.2.13, page 4-18) 


6-14




• Check the insertion status of J13 in CMC-1205R. 


4-14) 


4-36) 

[2]-6 Relay Filter Circuit CSC-656 in Scanner Unit (NKE-1129/2254) 

• Check that all the connectors for Relay Filter Circuit CSC-656 are inserted. 










1783. 

6 


[2]-10 Internal cable for Scanner Unit 

• Check the internal cable. (NKE-2103) 

6-15


6.2.10 TXRX (HL) 

[1] Content 

The antenna's reference point signal is not being output from the Scanner Unit. 

When this message appears, radar transmission is forcibly stopped. 

There are two possibilities: 1) the motor is not rotating and 2) the reference point 

signal is not being output. First, check that the motor is rotating. 

If the motor is not rotating and wind blow very strong, it remains possible that the 

motor driving system has not a problem. If the radiator is subjected to external 

force of wind (corresponding wind speed is greater than 51.5m/s) that exceed the 

ability to drive the Scanner Unit, the Scanner Unit stop to drive the motor. 

Because a built-in overload protection circuit is activated. In this case, the alarm is 

appeared, but the equipment is not faulty. The radar transmit normally when the 

wind has calm down less than or equal to 51.5m/s. (see section 2.3.1, page 2-6, section 

6.2.3, page 6-9) 

If the motor is not rotating, it is possible there is a fault in the motor, Relay Filter 

Circuit CSC-656, installation cable, I/F Unit NQA-2123. 

If the motor is rotating, it is possible that there is a fault in the encoder or T/R 

Control Circuit CMC-1205R. 


[2]-1 Scanner Unit installation cable (NKE-1130/2254) 

• Check the Scanner Unit installation cable. 

TB103/TB203 φA,φB 

TB104/TB204 VERR/E 

TB103/TB202 U1/V1 


• Check fuse F3 of NQA-2123 and replace it if it is blown. 

• Check the cables inside NQA-2123. 

W421,W422 

[2]-3 Motor in the Scanner Unit 

• Check the wiring of motor B101. 

• Motor replacement (MDBW10823). (NKE-1130, see section 4.2.3, page 4-6) 

• Motor replacement (7BDRD0044A, 7BDRD0045A). (NKE-2254, see section 4.3.3, 

page 4-28) 

• Motor replacement (7BDRD0048). (NKE-2103, see section 4.4.3, page 4-49) 

[2]-4 Scanner Unit encoder 

• Check the wiring of encoder B102. 


6-16





• Check the insertion status of J13 in T/R Control Circuit CMC-1205R. 


4-14) 


4-36) 

[2]-6 Relay Filter Circuit CSC-656 in Scanner Unit (NKE-1130/2254) 

• Check that all the connectors for Relay Filter Circuit CSC-656 are inserted. 










6 

6.2.11 TXRX (Data) 

[1] Content 

There is a problem in the communication between the display unit and the 

Scanner Unit. When this message appears, radar is not transmitted. 

It is possible that there is a problem in the cable between the display unit and the 

Scanner Unit or that power is not being applied to the Scanner Unit. 

First, check the voltage of the power supply applied to the Scanner Unit (+48V/ 

+48VG) to identfy the cause of problem. 

If power control unit (PCU) NQE-3167 is being used, it is possible that there is a 

problem with the PCU installation cable or the PCU itself. 

6-17



[2]-1 Scanner Unit installation cable 

• Check the installation cable of the Scanner Unit or the Scanner Unit. 

TB201 MTR+/MTR- 

TB203 +48V/+48VG、 

• Check the installation cable. (NKE-2103) 


• Check that all the connectors for T/R Control Circuit CMC-1205R are inserted. 

TB101 MTR+/MTR-, J1103 


4-14) 


4-36) 


• Check that each connector for Power Supply Circuit CBD-1682A is inserted. 

J3 1A/2A:DC48V, J1003 


page 4-13) 


page 4-35) 








• Check the insertion status of J1002 in Power Supply Circuit CBD-1783. 




6-18

INDEX > 6.Troubleshooting > 6.3 Display Unit error messages 

6.3 Display Unit error messages 

6.3.1 Keyboard (Data), Keyboard (Data2) 

[1] Content 

There is a problem with the communication of the operation unit. Keyboard 

(Data) and Keyboard (Data2) indicate the communication status of the main 

operating unit and the sub operating unit, respectively. 

It is possible there is a problem in the operating unit, an operating unit cable is 

damaged, a problem with the I/F circuit, or there is a problem in the radar process 

circuit. 


[2]-1 Operation Circuit CCK-979 in operation unit 

• Check the insertion status of J6001 in Operation Circuit CCK-979. 

• Oeration Circuit replacement (CCK-979). (see section 4.7.1, page 4-87) 

• Replace NCE-5171. 


• Check the insertion status of J4108 and J4114 in I/F Unit NQA-2123. 

• I/F Unit replacement (NQA-2123). (see section 4.6.2, page 4-70) 

6 

[2]-3 Radar Process Circuit CDC-1332 in Radar Process Unit 

• Check the installation status of J4403 in Radar Process Circuit CDC-1332. 

• Radar Process Circuit replacement (CDC-1332). (see section 4.6.3, page 4-73) 

6.3.2 ISW (Data) 

[1] Content 

There is a problem in communication with the inter switch unit. 

It is possible there is a problem with the inter switch unit, damage to the inter 

switch cable, a problem with the terminal board circuit, or a problem with the 


It is possible the power for the inter switch unit is not turned on. 

6-19



[2]-1 Interswitch Circuit CCL-304R in Interswitch Unit 

• Check the status of Interswitch Circuit CCL-304R. 

• Check the inter switch cable. 

TB901, TB902, TB903, TB904 

• Replace Interswitch Unit NQE-3141-4A/8A. 

[2]-2 Terminal Board CQD-1937A in Radar Process Unit 

• Check the insertion status of TB4301 and J4301 in the Terminal Board CQD- 

1937A. 


• Check the insertion status of J4105, J4107 and J4108 in I/F Unit NQA-2123. 





6.3.3 PROC (Trigger) 

[1] Content 

There is a problem with the trigger signal from the Scanner Unit. 

If TXRX (Trigger) or TXRX (Data) appears, resolve that problem first. 

It is possible there is damage to the Scanner Unit installation cable, the terminal 

block circuit board, or the radar process circuit. 

If the inter switch is in use, it is possible that the inter switch cable or the inter 

switch unit is damaged. 



• Check the insertion status of J4105, J4107, J4108 and J4110 in I/F Unit NQA- 

2123. 


6-20




1937A. 


1937A. 

[2]-3 Interswitch Circuit CCL-304R in Interswitch unit 

• Check the status of Interswitch Circuit CCL-304R. 

• Check the inter switch cable. 

TB901, TB902, TB903, TB904 





6.3.4 PROC (AZI) 

[1] Content 

There is a problem with the antenna rotation signal from the Scanner Unit. 

6 

If TXRX (AZI) or TXRX (Data) is shown, resolve that problem first. 

It is possible that the Scanner Unit installation cable is damaged or that there is a 

problem with the terminal block circuit board or the radar process circuit board. 

If the inter switch is in use, it is possible that the inter switch cable is damaged or 

that the inter switch unit is faulty. 




2123. 



• Check the insertion status of TB4301 and J4301 in the tTerminal Board CQD- 

1937A. 

• Check the insertion status of TB4310 and J4310 in the tTerminal Board CQD- 

1937A. 

6-21


[2]-3 Interswitch Circuit CCL-304R in Interswitch Unit 

• Check the status of interswitch circuit CCL-304R. 

• Check the interswitch cable. 

TB901, TB902, TB903, TB904 





6.3.5 PROC (HL) 

[1] Content 

There is a problem with the antenna rotation signal from the Scanner Unit. 

If TXRX (AZI) or TXRX (Data) is shown, resolve that problem first. 



If the inter switch is in use, it is possible that the inter switch cable is damaged or 

that the inter switch unit is faulty. 




2123. 




1937A. 


1937A. 




TB901, TB902, TB903, TB904 


6-22





6.3.6 PROC (Video) 

[1] Content 

There is a problem with the radar video signal from the Scanner Unit. 

If TXRX (Video) or TXRX (Data) appears, resolve that problem first. 



If you are using the inter switch, it is possible that the inter switch cable is 

damaged or that there is a problem with the inter switch unit. 




2123. 


6 



1937A. 


1937A. 




TB901, TB902, TB903, TB904 





6-23


6.3.7 PROC (INT) 

[1] Content 

There is a problem with the processing reference pulse signal in the radar process 

circuit. 

If TXRX (Trigger), TXRX (Data) or PROC (Trigger) is shown, resolve that 

problem first. 

It is possible that the Scanner Unit installation cable is damaged, or that there is a 

problem with the terminal block circuit board or radar process circuit board. 

If you are using the inter switch, it is possible that the inter switch cable is 

damaged or that there is a problem with the inter switch unit. 




2123. 




1937A. 


1937A. 




TB901, TB902, TB903, TB904 





6-24


6.3.8 Fan (LCD) 

[1] Content 

There is a problem with the cooling fan for the display of the monitor unit. 


[2]-1 Fan in LCD Monitor 

• Blower Circuit replacement (CBP-173A). (see section 4.5.6, page 4-68 ) 

6.3.9 TT (Boot) 

[1] Content 

There is a problem with the ARPA/ATA process circuit in the Radar Process Unit 

of the Radar Process Unit. 

When this error appears, it is not possible to use the target tracking function (TT, 

ARPA/ATA). 

6 


[2]-1 ARPA/ATA Process CircuitNCA-877WA/877A in Radar Process Unit 

• Check the installation status of ARPA/ATA Process Circuit NCA-877WA/ 

877A. 

• ARPA/ATA Process Circuit replacement (NCA-877WA/877A). (see section 4.6.5, 

page 4-78) 



6-25


6.3.10 ASIC1 to RADAR 

[1] Content 

There is a problem with the signal from the radar process circuit board in the 

Radar Process Unit of the display unit to the DSP circuit board. 

Normally, the system does not contain a DSP circuit board, so this message will 

not appear. 

If this error appears, this radar image cannot be displayed. 


[2]-1 NCA-877WA/877A in Radar Process Unit 

• Check the installation connector of ARPA/ATA Process Circuit NCA-877WA/ 

877A. 


page 4-78) 



6.3.11 AIS PROC (Data) 

[1] Content 

There is a problem with the signal from the AIS process circuit board in the Radar 

Process Unit of the display unit to the radar process circuit board. 

If this error appears, AIS information cannot be displayed. 


[2]-1 NQA-2103 in Radar Process Unit 

• Check the installation status of AIS process circuit NQA-2103. 


page 4-78) 



6-26


6.3.12 GYRO I/F (Data) 

[1] Content 

There is a problem with the communication signal from the GYRO I/F unit in the 

Radar Process Unit of the display unit and the radar process circuit board. 

If this error appears, the true azimuth cannot be displayed. 

It is possible that there is a fault in the GYRO I/F unit, the terminal block circuit 

board, or the radar process circuit board. 


[2]-1 GYRO Interface Unit NCT-59A in the Radar Process Unit 

• Check the insertion status of the J4201 in the GYRO I/F unit NCT-59A in the 

Radar Process Unit. 

• Check the lighting status of the LED on NCT-59A. 

• GYRO Interface Unit replacement (NCT-59A). (see section 4.6.7, page 4-81) 



2123. 


6 



6.3.13 Battery Low 

[1] Content 

The battery for memory backup used in radar process circuit board CDC-1324 is 

about to run out. 


[2]-1 Battery CDC-1332 BT1 

• Battery replacement (CR2032). (see section 4.6.4, page 4-76) 

6-27


6.3.14 Battery Dead 

[1] Content 

The battery for memory backup used in radar process circuit board CDC-1324 has 

died. 


[2]-1 Battery CDC-1332 BT1 

• Battery replacement (CR2032). (see section 4.6.4, page 4-76) 

6-28

INDEX > 6.Troubleshooting > 6.4 Error messages related to external input/output 

6.4 Error messages related to external 

input/output 

6.4.1 GYRO I/F (GYRO) 

[1] Content 

The GYRO I/F circuit board in the Radar Process Unit cannot recognize the 

GYRO signal. 


It is possible that there is a blown fuse in the GYRO I/F circuit board, or that there 

is a fault in the GYRO I/F circuit board or the terminal block circuit board. It is 

also possible that there is no output from the GYRO side or that the GYRO signal 

amplitude is low. 


[2]-1 NCT-59A in the Radar Process Unit 

• Check the installation status of GYRO I/F unit NCT-59A in the Radar Process 

Unit. 

• Check the switch settings of NCT-59A. 

6 

• GYRO Interface Circuit Fuses replacement (MF51NR-0.5A). (see section 4.6.8, 

page 4-83) 

• GYRO Interface Unit replacement (NCT-59A). (see section 4.6.7, page 4-81) 

6.4.2 Heading (Data) 

[1] Content 

The radar process circuit board in the Radar Process Unit cannot recognize true 

azimuth data. 


It is possible that there is a fault in the terminal block circuit board or the radar 

process circuit board. 

It is possible that the baud rate of the COMPASS port is not set correctly. 

It is also possible that there is no output data from the GYRO side. 

6-29




• Check the insertion status of the J4303 on Terminal Board CQD-1937A in the 


• Check the connection status of the installation cable for Terminal Board CQD- 

1937A : TB4303. 





• Check the insertion status of J4402 and J4403 in the Radar Process Circuit 

CDC-1332. 

• In the service engineer menu, check the baud rate. 


6.4.3 Position (Data) 

[1] Content 

Position data cannot be recognized by the radar process circuit board in the Radar 

Process Unit. 

If this error appears, the latitude and longitude cannot be displayed. 

It is possible that the terminal block circuit board or radar process circuit board is 

faulty. 

It is possible that the baud rate of the GPS serial port is not set correctly (Refer to 

Section 7.2.1 of the instruction manual). 

It is possible that the receiving port connected to the GPS is not set for use (Refer 

to Section 7.2.1 of the instruction manual). 

It is also possible that there is no output position data from the GYRO side. 






1937A : TB4303. 

6-30







CDC-1332. 


• In the service engineer menu, check the receiving port in use. 


6.4.4 Date (Data) 

[1] Content 

Position data cannot be recognized by the radar process circuit board in the Radar 

Process Unit. 

If this error appears, the automatic time offset function cannot be used. 


faulty. 

6 

It is possible that the baud rate of the GPS serial port is not set correctly (Refer to 


It is possible that the receiving port connected to the GPS is not set for use (Refer 

to Section 7.2.1 of the instruction manual). 

It is also possible that there is no output date data from the GYRO side. 






1937A : TB4303. 




6-31




CDC-1332. 




6.4.5 GPS (Status) 

[1] Content 

GPS information received by the radar process circuit board in the Radar Process 

Unit is not correct. 

If this error appears, latitude and longitude cannot be displayed. 

It is possible that the GPS receiver is not able to perform position fixing. 


[2]-1 GPS receiver 

• Adjust the GPS receiver so that it can measure position information. 

6.4.6 Speed (Log) 

[1] Content 

Where Log is selected as the ship speed information to use, the log signal is 

abnormal. 

If this error appears, the ship speed cannot be displayed. 

The GYRO I/F (Data) or GYRO I/F (Log) message commonly appears at the 

same time as this message. If so, resolve that problem. 

If another ship speed information format is selected, this error will stop appearing. 


[2]-1 Ship speed device problem 

• Use another form of ship speed information (MAN, 2AXG, 2AXW, GPS). 

6-32


6.4.7 Speed (2AXG), Speed (2AXW) 

[1] Content 

Where 2AXG or 2AXW is selected as the ship speed information to use, the serial 

log signal is abnormal. 



faulty. 

It is possible that the baud rate for the serial port for the log is not set correctly 

(Refer to Section 7.2.1 of the instruction manual). 

It is possible that the receiving port connected to the log is not set for use (Refer to 


Alternatively, it could be that there is no output from the log side. 







1937A : TB4303. 

6 






CDC-1332. 



• Use another form of ship speed information (MAN, GPS, Log). 


6-33


6.4.8 Speed (GPS) 

[1] Content 

Where GPS is selected as the ship speed information to use, the GPS signal is 

abnormal. 


The GPS (Data) or GPS (Status) message commonly appears at the same time as 

this message. If so, resolve that problem. 



[2]-1 Ship speed device problem 

• Use another form of ship speed information (MAN, 2AXG, 2AXW, GPS). 

6.4.9 AIS (Data) 

[1] Content 

The AIS process circuit board in the Radar Process Unit cannot recognize the AIS 

data. 

If this error appears, AIS information cannot be displayed. 

It is possible that there is a problem with the terminal block circuit board, AIS 

process circuit board, or radar process circuit board. 

It is possible that the baud rate is not correctly set for the AIS serial port. 

It is possible that the receiving port for AIS is not set for use. 

Alternatively, it could be that there is no output from the AIS side. 

You can check the AIS data reception status by looking at the operation LED AIS 

on the terminal block circuit board. 

6-34







1937A : TB4303. 






CDC-1332. 




[2]-4 AIS Process Circuit NQA-2103 in Radar Process Unit 

• Check the installation status of AIS process unit NQA-2103. 

• AIS Process Circuit replacement (NQA-2103). (see section 4.6.6, page 4-79) 

6 

6.4.10 AIS Alarm *** 

[1] Content 

The AIS data received by the system includes alarm information. A three-digit 

number appears for "***", showing the type of the alarm (alarm number). 

This message appears when there is a problem with the AIS equipment. 

It is not possible to resolve this problem from the radar equipment side. Resolve 

the problem with the AIS equipment. For the meaning of the number, see the 

instruction manual for the AIS equipment connected to the system. 

In many cases, the problem is that navigation equipment such as the GYRO or 

GPS equipment is not connected to the AIS equipment. 


[2]-1 AIS equipment 

• Resolve the problem in the AIS equipment. 

6-35


6.4.11 Depth (Data) 

[1] Content 

Where water depth data is received by the serial port, there is a problem with the 

serial data. 

If this error appears, the water depth cannot be displayed. 

It is possible there is a problem with the terminal block circuit board or the radar 


It is possible that the baud rate for the water depth serial port is not correctly set. 

It is possible that the receiving port connected to the depth measurement device is 

not set for use. 

Alternatively, it is possible that there is no output from the depth measurement 

equipment. 






1937A. 

TB4303 A port connected to the depth measurement device. (e.g. NAV2RXD+/ 

NAV2RXD-) 






CDC-1332. 




6-36


6.4.12 TEMP. (Data) 

[1] Content 

Where water temperature data is received by the serial port, there is a problem 

with the serial data. 

If this error appears, the water temperature cannot be displayed. 



It is possible that the baud rate for the water temperature serial port is not 

correctly set. 

It is possible that the receiving port connected to the water temperature 

measurement device is not set for use. 

Alternatively, it is possible that there is no output from the water temperature 

measurement equipment. 






1937A. 

TB4303 A port connected to the water temperature meter. (e.g. NAV2RXD+/ 

NAV2RXD-) 

6 






CDC-1332. 




6-37


6.4.13 Wind (Data) 

[1] Content 

Where wind direction and wind speed data is received by the serial port, there is a 

problem with the serial data.If this error appears, the wind direction and wind 

speed cannot be displayed. 



It is possible that the baud rate for the wind direction and wind speed serial port is 

not correctly set. 

It is possible that the receiving port connected to the wind direction and wind 

speed measurement device is not set for use. 

Alternatively, it is possible that there is no output from the wind direction and 

wind speed measurement equipment. 






1937A. 

TB4303 A port connected to the wind direction and wind speed measurement 

device. (e.g. NAV2RXD+/NAV2RXD-) 






CDC-1332. 




6-38


6.4.14 Current (Data) 

[1] Content 

Where current data is received by the serial port, there is a problem with the serial 

data. 

If this error appears, the current cannot be displayed. 



It is possible that the baud rate for the current serial port is not correctly set. 

It is possible that the receiving port connected to the current measurement device 

is not set for use. 

Alternatively, it is possible that there is no output from the current measurement 

equipment. 






1937A. 

TB4303 A port connected to the current measurement device. (e.g. NAV2RXD+/ 

NAV2RXD-) 

6 






CDC-1332. 




6-39


6.4.15 ROT (Data) 

[1] Content 

Where Rate of Turn (ROT) data is received by the serial port, there is a problem 


If this error appears, the ROT cannot be displayed. 



It is possible that the baud rate for the ROT serial port is not correctly set. 

It is possible that the receiving port connected to the ROT measurement device is 

not set for use. 

Alternatively, it is possible that there is no output from the heading equipment. 






1937A. 

TB4303 A port connected to the ROT data. (e.g. NAV2RXD+/NAV2RXD-) 






CDC-1332. 




6-40


6.4.16 RSA (Data) 

[1] Content 

Where rudder angle sensor data is received by the serial port, there is a problem 


If this error appears, the rudder angle cannot be displayed. 



It is possible that the baud rate for the rudder angle serial port is not correctly set. 

It is possible that the receiving port connected to the rudder angle measurement 

device is not set for use. 

Alternatively, it is possible that there is no output from the rudder angle 

measurement equipment. 






1937A. 

TB4303 A port connected to the rudder angle sensor. (e.g. NAV2RXD+/ 

NAV2RXD-) 

6 




[2]-3 Radar Process Circuit CDC-1332 in in Radar Process Unit 


CDC-1332. 




6-41

INDEX > 6.Troubleshooting > 6.5 Sample Problems : Internal Circuit 

6.5 Sample Problems : Internal Circuit 

6.5.1 Screen remains dark even when brightness dial turned to 

maximum 

[1] Content 

If the display is faint when viewed under bright external lighting conditions, it is 

possible that there is a problem with the backlight or the brightness adjustment 


If the screen is completely black, it is possible there is a problem with the LCD 

module or the Radar Process Unit. 

Under the high temperature environment, the brightness of the LCD backlight is 

dimmed by a protection circuit about half of the maximum brightness. It is normal 

operation and the equipment is not faulty. 


[2]-1 Backlight 

• LCD Panel replacement (CML-771). (see section 4.5.2, page 4-60) 

• Brilliance Control Circuit replacement (CCK-989). (see section 4.5.3, page 4-63) 

• Inverter Circuit replacement (CBF-38). (see section 4.5.5, page 4-67) 

[2]-2 Monitor unit 

• Interface Circuit Board replacement (CMH-2227). (see section 4.5.4, page 4-65) 



6-42


6.5.2 The brightness nonuniformity is visible on the LCD panel at 

night condition 

[1] Content 

If you adjust the brightness dial to minimum, you will see the brightness 

nonuniformity. It is specific characteristics of CCFL backlight, so the equipment 

is not faulty. 


[2]-1 The brightness dial 

• Adjust the brightness not to visible the brightness nonuniformity. 

6.5.3 Screen sometimes shows display and sometimes not 

[1] Content 

The display appears and disappears even though the radar is operating properly. 


6 

[2]-1 Connection 

• There could be a problem with a connector connection. Check the connections 

of the RGB connector (J7) and the LCD power supply (J6). 

[2]-2 Input voltage 

• The input voltage could be too low. Check the voltage. 

6-43


6.5.4 The power can not be turned on 

[1] Content 

The system does not start when the power switch is pressed. 


[2]-1 Circuit breaker 

• Check that the circuit breaker is on. 

[2]-2 Input voltage 

• It is possible that the input voltage is high, causing the protective circuit to 

operate. Check the voltage. 

6.5.5 Track ball does not move cursor 

[1] Content 

The cursor does not move when the track ball is operated. 


[2]-1 Setting 

• Is the mode set for operation using EBL and VRM? Press and hold the EBL 

button to return to the normal mode. 

[2]-2 Trackball 

• If operation is impossible even using EBL and VRM, replace the track ball. 

• Trackball replacement (CCK-1000). (see section 4.7.3, page 4-90) 

6-44


6.5.6 "Scanner Rotating" message displayed, Scanner Unit does 

not stop when transmission stops 

[1] Content 

The scanner keeps rotating even when transmission is stops. The "Scanner 

Rotating" warning appears in yellow. 


[2]-1 Setting 

• The unit is set to ICE CLASS Standby Mode. If this is not necessary, clear the 

setting (Refer to Section 6.5.6 of the instruction manual). 

6.5.7 Display unit layout shown on inter switch menu is mirror 

image of actual layout 

[1] Content 

It was not possible in the installation work to number the display units left to right 

from No. 1. 

6 


[2]-1 Interswitch unit 

• Switch the terminal blocks on the Interswitch side. 

6.5.8 Displayed echo does not match distance / azimuth of actual 

ship 

[1] Content 

At close range, the displayed echo does not match the distance / azimuth of the 

actual ship. 


[2]-1 CCRP setting error 

• Set the CCRP correctly (Refer to Section 7.1.9 of the instruction manual). 

6-45


[2]-2 Bearing setting error 

• Set the bearing correctly (Refer to Section 7.1.4 of the instruction manual). 

[2]-3 Range setting error 

• Set the range setting correctly (Refer to Section 7.1.5 of the instruction 

manual). 

[2]-4 GPS antenna position error 

• Set the GPS antenna position correctly (Refer to Section 7.1.9 of the instruction 

manual). 

6.5.9 Cannot use CompactFlash® 1 card 

[1] Content 

The CompactFlash cards of the major manufacturers have been confirmed to work 

with the system. However, some cards do not work. Given the large number of 

CompactFlash card manufacturers, it is not possible to confirm the compatibility 

of all available products. The manufacturers of cards that have been confirmed to 

be compatible are sown below. The use of these cards is recommended. 

SanDisk: 512MB/1GB/2GB/4GB 

Lexer Media: 512MB/1GB/2GB 

Transcend: 2GB 

HAGIWARA SYS-COM: 4GB 

IO DATA: 512MB/1GB/2GB 

BUFFALO: 512MB/1GB/2GB 


[2]-1 Adapter used 

• Are you using a CF card adapter to insert a diferent type of medium, such as an 

SD card? It is not possible to use another type of memory card by using an 

adapter. 


6-46


6.5.10 A line appears that you do not remember inputting. 

[1] Content 

A line that you do not remember inputting appears on the radar screen. 


[2]-1 PI 

There could be a problem with the PI (parallel index). Check that the PI display is 

set to off (Refer to Section 4.1.5 of the instruction manual). 

[2]-2 MOB 

You may have pressed the MOB key. Try pressing and holding the MOB key 

(cancel) (Refer to Section 2.2 of the instruction manual). 

[2]-3 Destination 

It could be that a destination is set. Check if a destination has been set, and clear 

the setting if it has. For details, see the instruction manual for the NDB-34A 

plotter. 

[2]-4 Temparary destination 

It could be that a temporary destination has been set. Set the user key to the 

terminal point key (○→) and double-click anywhere. See Section 3.8.7 of the 

instruction manual for how to set the user key. 

6 

6.5.11 Cannot display initial acquisition mark 

[1] Content 

Initial acquisition mark cannot be displayed even selecting the target. 


[2]-1 TT brightness 

Check that TT brightness is no set to zero (Refer to Section 3.8.5 of the instruction 

manual). 

6-47

INDEX > 6.Troubleshooting > 6.6 External equipment 

6.6 External equipment 

6.6.1 Cannot connect to external equipment for NMEA output 

[1] Content 

It is possible that there is a problem in the connection polarity, the baud rate 

setting, the usage settings of the external navigation equipment, or that there is a 

fan-out problem with the output equipment. 


[2]-1 Connection polarity 

• If the connection is correct, , the reference of the oscilloscope is set to the 

minus side, the trace goes to the minus side when there is no signal. 

[2]-2 Baud rate 

• Set the baud rate to match the output spec, ication of the navigation 

equipment.。 

i 

If the display is incorrect even , the connection polarity and the 

baud rate are correctly set, contact the service department. If 

you include the log of the line monitor in your query, the 

problem can be resolved quickly. 

[2]-3 Usage settings for external navigation equipment 

• The connected equipment must be set up for use. Enable the equipment, 

following the instructions in Section 7.1.6 in the Instruction Manual. 

[2]-4 External equipment fan-out 

• Do you have more than one device connected to the same port on the external 

equipment? If so, the output capacity of the external equipment may be 

exceeded, preventing signals from arriving correctly. Follow the spec, ications 

of the external equipment. 

i 

i 

By using the Serviceman Menu → COM Port Setting → Line 

Monitor function, you can check the content of communication. 

Using this function and the screen capture function can be of 

help in resolving the problem quickly. 

The line monitor function mentioned above displays data that is 

determined to be correct. If the communication content is not 

considered to be correct, it is not displayed 

6-48


6.6.2 Cannot display true bearing 

[1] Content 

In such cases, there is always some error that appears, such as:GYRO I/F 

(DATA), GYRO I/F (GYRO), or Heading (DATA). 

It is possible that settings have not been made correctly or that there is a problem 

on the azimuth sensor side. 


[2]-1 GYRO(DATA) STEP 

• In the step type of gyro, where the signal amplitude is small, errors can occur. 

Errors are often seen when multiple devices are connected to a single port, and 

the output capacity of the gyro-compass is exceeded. 

• When this happens, the potential of the LOW level of the output signal may 

occasionally rise. The input spec, ications for the GYRO I/F circuit require the 

LOW level of +/-2.5 V or less. The HIGH level must be +/-20 V or more. 

i 

In the previous model, the JMA-5300MK1, the GYRO I/F circuit 

continued to operate even when the power of the radar display 

unit was turned off, receiving power from the output signal of 

the gyro-compass. 

In the JMA-5300MK2, the GYRO I/F circuit operates using the 

internal power supply of the display unit even when the display 

unit is turned off. This has reduced the output conditions on the 

gyro-compass side. From the perspective of the gyro-compass, 

the input resistance of the GYRO I/F circuit is maintained at a 

high level. (Reference: 22kΩ @24 Vdc, when the display unit is 

turned off.) 

6 

[2]-2 GYRO(DATA) SYNCHRO 

If errors appear intermittently, the situation may improve , you switch No. 5 of 

DIP-SW S2 on the GYRO I/F circuit to ON. However, this S2(5) only extends the 

time it takes for an error to be ident, ied, and it does not resolve the essential 

problem on the GYRO side. 

6-49


6.6.3 Blurry image on the remote display 

[1] Content 

This problem occurs due to cable loss , long cables are used in connections or , 

there is a mismatch with the input impedance on the remote display side. 

Correct operation has been confirmed using a 30 m cable to connect a JRC VDR, 

when using the CQD-1831 (VDR I/F kit) and a 3C-2V coaxial cable. 


[2]-1 Cable type 

If it is necessary to transfer signals over a long distance, use a coaxial cable (such 

as 3C-2V). 

[2]-2 Cable length 

If it is necessary to transfer signals over a distance of 30 m or more, use a buffer 

amp (sold separately) in between the main unit and the remote display. 

[2]-3 Remote display 

The signal quality is also affected by the monitor used for the remote display. If 

the display is still distorted when a coaxial cable is used, the situation may be 

improved by using a buffer amp. 

6-50

Section 7 

Drawings 

7.1 Outline Drawings ...................................................................................7-1 

Fig.7-1: SCANNER UNIT NKE-1130 (JMA-5332-12) ...................................... 7-1 



Fig.7-4: SCANNER UNIT NKE-2254-6HS (JMA-5322-6HS) ........................... 7-4 

Fig.7-5: SCANNER UNIT NKE-2103-6 (JMA-5312-6/6HS) ............................. 7-5 

Fig.7-6: RADAR PROCESS UNIT NDC-1417 .................................................. 7-6 

Fig.7-7: LCD MONITOR NWZ-173 ................................................................... 7-7 

Fig.7-8: LCD MONITOR NWZ-173 with stand MPBC42446 (option) ............ 7-8 

Fig.7-9: OPERATION UNIT NCE-5171 ............................................................ 7-9 

Fig.7-10: 

POWER SUPPLY NBA-5111 (JMA-5332-12 : standard, 

JMA-5322-7/9/6HS, JMA-5312-6/6HS : option) ............................. 7-10 

Fig.7-11: JUNCTION BOX NQE-3151A (JMA-5332-12) .................................. 7-11 



Fig.7-14: POWER CONTROL UNIT NQE-3167 (option) ................................. 7-14 

7.2 General System Diagram ....................................................................7-15 

Fig.7-15: General System Diagram of RADAR, Type JMA-5332-12 ............ 7-15 

Fig.7-16: General System Diagram of RADAR, Type JMA-5322-7/9/6HS ... 7-16 

Fig.7-17: General System Diagram of RADAR, Type JMA-5312-6/6HS ...... 7-17

7.3 Terminal Board Connection Diagram ................................................7-18 


Type JMA-5332-12 .......................................................................... 7-18 


Type JMA-5322-7/9/6HS ................................................................. 7-19 


Type JMA-5312-6/6HS .................................................................... 7-20 

7.4 Internal connection Diagram ..............................................................7-21 






NKE-2254-7/9/6HS (JMA-5322-7/9/6HS) ........................................ 7-23 


NKE-2103-6/6HS (JMA-5312-6/6HS) .............................................. 7-24 

Fig.7-25: Internal Connection Diagram of RADAR PROCESS UNIT 

NDC-1417 ......................................................................................... 7-25 

Fig.7-26: Internal Connection Diagram of LCD MONITOR NWZ-173 .......... 7-26 

Fig.7-27: Internal Connection Diagram of INTERFACE UNIT NQA-2123 .... 7-27 

Fig.7-28: Internal Connection Diagram of OPERATION UNIT NCE-5171 .... 7-28 

Fig.7-29: Internal Connection Diagram of JUNCTION BOX NQE-3151A 

(JMA-5332-12) ................................................................................. 7-29 

7.5 Circuit Schematic ................................................................................7-30 

Fig.7-30: Circuit Schematic of CQD-1937A ................................................... 7-30 



Fig.7-33: Circuit Schematic of CMH-2201 page 3 ......................................... 7-33

INDEX > 7.Drawings > 7.1 Outline Drawings 

7.1 Outline Drawings 

7 

Fig.7-1: SCANNER UNIT NKE-1130 (JMA-5332-12) 

7-1


Fig.7-2: SCANNER UNIT NKE-2254-7 (JMA-5322-7) 

7-2


7 

Fig.7-3: SCANNER UNIT NKE-2254-9 (JMA-5322-9) 

7-3


Fig.7-4: SCANNER UNIT NKE-2254-6HS (JMA-5322-6HS) 

7-4


7 

Fig.7-5: SCANNER UNIT NKE-2103-6 (JMA-5312-6/6HS) 

7-5


Fig.7-6: RADAR PROCESS UNIT NDC-1417 

7-6


7 

Fig.7-7: LCD MONITOR NWZ-173 

7-7


Fig.7-8: LCD MONITOR NWZ-173 with stand MPBC42446 (option) 

7-8


7 

Fig.7-9: OPERATION UNIT NCE-5171 

7-9


Fig.7-10: POWER SUPPLY NBA-5111 

(JMA-5332-12 : standard, JMA-5322-7/9/6HS, JMA-5312-6/6HS : option) 

7-10


7 

Fig.7-11: JUNCTION BOX NQE-3151A (JMA-5332-12) 

7-11


Fig.7-12: INTERSWITCH UNIT NQE-3141-4A (option) 

7-12


7 

Fig.7-13: INTERSWITCH UNIT NQE-3141-8A (option) 

7-13


Fig.7-14: POWER CONTROL UNIT NQE-3167 (option) 

7-14

INDEX > 7.Drawings > 7.2 General System Diagram 

7.2 General System Diagram 

NKE-1130 SCANNER UNIT 

NJU-84 PERFORMANCE MONITOR 

(OPTION) 

14 CORES COMPOSITE CABLE 

H-2695110056 

MAX φ23 (JRC SUPPLY) 

SHIP'S MAIN 

AC100/110/115V 50/60Hz 1φ 

0.6/1kV-DPYC-1.5 

NQE-3151A JUNCTION BOX 

AC220/230/240V 50/60Hz 1φ 


CFQ-6912 

MAX φ14.5 (JRC SUPPLY) 

NCD-4530 DISPLAY UNIT 

NCM-853-E CONTROL UNIT 

NDC-1417 RADAR PROCESS UNIT 

NWZ-173 LCD MONITOR 

NCA-877WA/877A 

(JRC SUPPLY) 5m 

ARPA/ATA PROCESS CIRCUIT (OPTION) 


INTER SWITCH 

AIS 

LOG(NMEA) 

H-2695111153 


250V-TTYCS-4 

250V-TTYCS-1 

NDB-34A PLOTTER CONTROL UNIT 

(OPTION) 

NQA-2103 AIS PROCESS UNIT 


7 

GYRO 

250V-MPYCYS-7 

(OPTION) 

NCE-5171 OPERATION UNIT 

LOG(200P) 

250V-DPYCYS-1.5 

NCT-59A GYRO INTERFACE UNIT 


GPS 

250V-TTYCS-1 

(OPTION) 

NBA-5111 POWER SUPPLY 

CFQ-5436-5 

MAX φ10 (JRC SUPPLY) 5m 

SHIP'S MAIN 

0.6/1kV-DPYC-6 

AC100/110/115V 50/60Hz 1φ 

AC220/230/240V 50/60Hz 1φ 

NOTE:Eliminating the interference on frequencies used for marine communications and navigation due 

to operation of the radar . 

All cables of the radar are to be run away from the cables of radio equipment . 

(Ex. Radiotelephone. Communications receiver and direction finder , etc. ) 

Especially inter -wiring cables between scanner unit and display unit of the radar should not be run 

parallel with the cables of radio equipment . 

Performance monitor , ARPA/ATA Process Unit, AIS Process Unit and GYRO Interface Unit 

must be fitted on ships compliant to IMO . 

Fig.7-15: General System Diagram of RADAR, Type JMA-5332-12 

7-15


NKE-2254-7/9/6HS SCANNER UNIT 


(OPTION) 


CFQ-6912 










INTER SWITCH 

H-2695111153 




AIS 

250V-TTYCS-4 

(OPTION) 

LOG(NMEA) 

250V-TTYCS-1 


GYRO 

250V-MPYCYS-7 

(OPTION) 


LOG(200P) 




GPS 

250V-TTYCS-1 

(OPTION) 


CFQ-5436-5 


SHIP'S MAIN 


AC100/110/115V 50/60Hz 1φ 

AC220/230/240V 50/60Hz 1φ 









Fig.7-16: General System Diagram of RADAR, Type JMA-5322-7/9/6HS 

7-16


NKE-2103-6/6HS SCANNER UNIT 


(OPTION) 


CFQ-6912 










INTER SWITCH 

H-2695111153 




AIS 

250V-TTYCS-4 

(OPTION) 

LOG(NMEA) 

250V-TTYCS-1 


GYRO 

250V-MPYCYS-7 

(OPTION) 


LOG(200P) 

GPS 


250V-TTYCS-1 


(OPTION) 


7 


CFQ-5436-5 


SHIP'S MAIN 


AC100/110/115V 50/60Hz 1φ 

AC220/230/240V 50/60Hz 1φ 









Fig.7-17: General System Diagram of RADAR, Type JMA-5312-6/6HS 

7-17

INDEX > 7.Drawings > 7.3 Terminal Board Connection Diagram 

7.3 Terminal Board Connection Diagram 


NKE-1130 SCANNER UNIT 

TB101 

TB102 

1- 

1+ 

1- 

1+ 

3- 

2- 

2+ 

3+ 

1- 

1+ 

3 

4 

1 BP+ 

2 BP- 

3 BZ+ 

4 BZ- 

5 TRG+ 

6 TRG- 

MTR+ 

MTR- 

MTRE 

10 VD+ 

11 VD- 

CQD-1937A TERMINAL BOARD 

TB4303 

1 NAV1TXDE 

2 NAV1TXD- 

3 NAV1TXD+ 

4 NAV1RXDE 

5 NAV1RXD- 

6 NAV1RXD+ 

7 GPSTXD- 

8 GPSTXD+ 

9 GPSRXD- 

10 GPSRXD+ 

11 NAV2RXD- 

12 NAV2RXD+ 

13 ARPATXD- 

14 ARPATXD+ 

15 ARPAALM- 

16 ARPAALM+ 

17 SYSALM- 

18 SYSALM+ 

19 EVENT- 

20 EVENT+ 

21 COMPAS- 

22 COMPAS+ 

1 +48V 

2 +48VG 

3 U1 

4 V1 

5 W1 

6 1 

7 2 

8 3 

9 4 

RED.T/PUR 

BLU.T/BLK 

YEL.TT 

GRN.TT 

NMEA0183 

OUTPUT 

NMEA0183 

INPUT 

2 

GPS 

OUTPUT 

GPS 

INPUT 

ORN 

WHT 

NMEA0183 

INPUT 

NMEA0183 

OUTPUT 

CONTACT 

OUT 

CONTACT 

IN 

NMEA0183 

INPUT 

BRN 

PNK 

BLK 

ORG 

7 

8 

9 

RED 

BLU 

PUR 

YEL 

WHT 

GRN 

1 

WHT 

YEL 

WHT 

BLU 

2 

1 

TB4301 

1 PWRIN- 

2 PWRIN+ 

3 PWROUT- 

4 PWROUT+ 

5 VDINE 

6 VDIN 

7 VDOUTE 

8 VDOUT 

9 TRGINE 

10 TRGIN 

11 TRGOUTE 

12 TRGOUT 

13 BPINE 

14 BPIN 

15 BPOUTE 

16 BPOUT 

17 BZINE 

18 BZIN 

19 BZOUTE 

20 BZOUT 

21 MTRINE 

22 MTRIN- 

23 MTRIN+ 

24 MTROUTE 

25 MTROUT- 

26 MTROUT+ 

INTER SWITCH 

OPTION 

NCT-59A GYRO I/F UNIT 

TB10 

1 1/R1 

2 2/S1 

3 3/S2 

4 S3 

5 5/R2 

GYRO SYNC/PULSE 

10 UTH 

11 U 

12 V 

TB20 

1 LOGP+ 

2 LOGP- 

3 LOGS+ 

4 LOGS- 

LOG SYNC/PULSE 

14-CORES CABLE 

2695110056 

(JRC SUPPLY) 

TB4302 

1 RBVDE 

2 RBVD 

3 TRGOE 

4 TRGO 

5 BPOE 

6 BPO 

7 BZOE 

8 BZO 

9 VDOE 

10 VDO 

SLAVE OUTPUT 

CFQ-8914 

(JRC SUPPLY) 

J8 

1 NC 

2 PCRXD 

3 PCTXD 

4 NC 

5 GND 

6 NC 

7 PCRTS 

8 PCCTS 

9 NC 

RS232C PORT 

NQE-3151A JUNCTION BOX 

J5 

1 GPSCTXD- 

2 GPSCTXD+ 

3 GPSCRXD+ 

4 GPSCRXD- 

5 GND 

6 ALM+ 

7 ALM- 

8 +5V 

To JLR-10/20/30 

RED 

RED 

RED 

BLK 

BLK 

BLK 

1 1A 

2 1A 

3 1A 

4 NC 

5 2A 

6 2A 

7 2A 

J1 

POWER INPUT 

+ 

- 

TB811 

J3 

1 +12V 

2 GND 

3 GPSRXD- 

4 GPSRXD+ 

5 GPSTXD+ 

To GPS 

1 TRX- 

2 TRX- 

3 TRX+ 

4 TRX+ 

5 GND 

6 COME 

7 COM- 

8 COM+ 

9 BZE 

TB4310 

BLU.T/GRY.T 

PUR.T/BRN.T 

WHT.T/ORN.T 

RED.T/GRN.T 

1 MOTOR- 

2 MOTOR- 

3 TRX- 

4 MOTOR+ 

5 MOTOR+ 

6 TRX+ 

7 GND 

8 +12V 

9 COM- 

WHT 

YEL 

10 COM+ 

11 BZE 

12 BZ 

13 BPE 

14 BP 

15 TRGE 

16 TRG 

17 VDE 

18 VD 

J2 

1 M- 

2 M- 

3 M+ 

4 M+ 

5 2A 

6 GND 

7 VDE 

8 +12V 

9 1A 

10 VD 

11 MTR+ 

12 BZ 

13 MTR- 

14 TRGE 

15 TRG 

16 BP 

J4406 in CDC-1332 

1 RED 

2 RED_E 

3 GRN 

4 GRN_E 

5 BLU 

6 BLU_E 

7 HS 

8 HS_E 

9 VS 

10 VS_E 

SLAVE RGB OUTPUT 

POWER 

OUTPUT 

+12V 

OUTPUT 

SLAVE 

INPUT 

BLU.T/GRY.T 

PUR.T/BRN.T 

WHT.T/ORN.T 

RED.T/GRN.T 

BLK.T/SKY.T 

BLK 

YEL.T/PNK.T 

YEL 

GRN 

WHT 

ORN 

WHT 

BLK 

WHT 

BRN 

J81 

1 PTI 

2 PTE 

3 TXI 

4 TXE 

BLU 

RED 

BLK 

J82 

1 LVR 

2 PMS 

3 E 

BLU.T 

BLK 

RED.T 

PUR 

WHT 

ORN 

4 

3 

2 

1 

TB812 

1 TRX- 

2 TRX- 

3 TRX+ 

4 TRX+ 

5 GND 

6 COME 

7 COM- 

8 COM+ 

9 BZE 

10 BZ 

11 BPE 

12 BP 

13 TRGE 

14 TRG 

15 VDE 

16 VD 

YEL.TT 

GRN.TT 

TB803 

1 U2 

2 V2 

3 W2 

AC MOTOR POWER 

NOTE: Performance monitor 

must be fitted on ships 

compliant to IMO. 

1- 

1+ 

10 BZ 

11 BPE 

12 BP 

13 TRGE 

14 TRG 

15 VDE 

16 VD 

GRN 

BLK 

ORN 

TB801 

1 U0 

2 V0 

3 W0 

AC MAIN IN 


CFQ-6912-20 

(JRC SUPPLY) 


SHIP’S MAIN 

AC100/220V 

50/60Hz 1Φ 

To 

PERFORMANCE MONITOR 

NJU-84 


(OPTION) 

NOTE: TB4310 7-8 

12V 出力を外部機器の電源として使用することはできません 

12V output is not available for external device’s power supply. 

RADR 

BUOY IN 

TRG 

OUT 

B PULSE 

OUT 

Z PLUSE 

OUT 

VIDEO 

OUTPUT 

250V-TTYCS-4 

250V-TTYCS-1 

250V-TTYCS-1 

AIS 

DGPS 

LOG(NMEA) 

250V-TTYCS-1 

JRC VDR 

(for remote maintenance) 

2695111153 

INTER SWITCH 

(JRC SUPPLY) 

18-CORES COMPOSITE 

CABLE 

Fig.7-18: Terminal Board Connection Diagram of RADAR, Type JMA-5332-12 

250V-MPYCYS-7 


GYRO 

LOG(200P) 

Dsub 15pin 

VDR or 

Remote monitor 

RECTIFIER 

CFQ-5436-5 

UNIT 

(5m JRC SUPPLY) 

7-18




TB4301 

NOTE: Performance monitor must be 

fitted on ships compliant to IMO. 

TB4310 

TB4303 

1 PWRIN- 

2 PWRIN+ 

3 PWROUT- 

4 PWROUT+ 

5 VDINE 

6 VDIN 

7 VDOUTE 

8 VDOUT 

9 TRGINE 

BRN 

PNK 

BLK 

ORG 

NMEA0183 

OUTPUT 

POWER 

OUTPUT 

1 MOTOR- 

2 MOTOR- 

3 TRX- 

4 MOTOR+ 

5 MOTOR+ 

6 TRX+ 

7 GND 

8 +12V 

9 COM- 

NMEA0183 

INPUT 

GPS 

OUTPUT 

GPS 

INPUT 

1 NAV1TXDE 

2 NAV1TXD- 

3 NAV1TXD+ 

4 NAV1RXDE 

5 NAV1RXD- 

6 NAV1RXD+ 

7 GPSTXD- 

8 GPSTXD+ 

9 GPSRXD- 

3- 

2- 

2+ 

3+ 

1- 

1+ 

250V-TTYCS-4 

250V-TTYCS-1 

250V-TTYCS-1 

+12V 

OUTPUT 

2 

1 

SLAVE 

INPUT 

10 COM+ 

11 BZE 

12 BZ 

13 BPE 

14 BP 

15 TRGE 

16 TRG 

17 VDE 

18 VD 

NOTE: TB4310 7-8 



AIS 

DGPS 

LOG(NMEA) 

250V-TTYCS-1 

JRC VDR 


10 TRGIN 

11 TRGOUTE 

12 TRGOUT 

13 BPINE 

14 BPIN 

15 BPOUTE 

16 BPOUT 

17 BZINE 

18 BZIN 

19 BZOUTE 

20 BZOUT 

21 MTRINE 

22 MTRIN- 

23 MTRIN+ 

24 MTROUTE 

25 MTROUT- 

RED 

BLU 

PUR 

YEL 

WHT 

GRN 

1- 

1+ 

NMEA0183 

INPUT 

NMEA0183 

OUTPUT 

CONTACT 

OUT 

CONTACT 

IN 

WHT 

YEL 

NMEA0183 

INPUT 

10 GPSRXD+ 

11 NAV2RXD- 

12 NAV2RXD+ 

13 ARPATXD- 

14 ARPATXD+ 

15 ARPAALM- 

16 ARPAALM+ 

17 SYSALM- 

18 SYSALM+ 

19 EVENT- 

20 EVENT+ 

21 COMPAS- 

22 COMPAS+ 

1- 

1+ 

1- 

1+ 

WHT 

BLU 

26 MTROUT+ 

INTER SWITCH 

2695111153 

BLU.T/GRY.T 

J2 

INTER SWITCH 

PUR.T/BRN.T 

WHT.T/ORN.T 

RED.T/GRN.T 

BLK.T/SKY.T 

BLK 

1 M- 

2 M- 

3 M+ 

4 M+ 

5 2A 

6 GND 

7 VDE 

8 +12V 

9 1A 

OPTION 

TB4302 

RADR 

BUOY IN 

TRG 

OUT 

1 RBVDE 

2 RBVD 

3 TRGOE 

4 TRGO 

5 BPOE 

6 BPO 

7 BZOE 


TB10 

1 1/R1 

2 2/S1 

3 3/S2 

4 S3 

5 5/R2 


(JRC SUPPLY) 


CABLE 

8 BZO 

10 VD 

TB20 

9 VDOE 

VIDEO 

11 MTR+ YEL 

1 LOGP+ 

10 VDO 

OUTPUT 

12 BZ GRN 

NKE-2254-7/9/6HS SCANNER UNIT 

2 LOGP- 

SLAVE OUTPUT 

13 MTR- WHT 

3 LOGS+ 

14 TRGE 

J1 

J3 

4 LOGS- 

15 TRG 

BLK.T/SKY.T 

250V-MPYCYS-7 


16 BP ORN 

1 2A 

GYRO 

YEL.T/PNK.T 


2 1A 

LOG(200P) ORN 

WHT 

J8 

J4 

1 NC 

2 PCRXD 

3 PCTXD 

4 NC 

5 GND 

6 NC 

7 PCRTS 

Fig.7-19: Terminal Board Connection Diagram of RADAR, Type JMA-5322-7/9/6HS 

B PULSE 

OUT 

YEL.T/PNK.T 

Z PLUSE 

OUT 

To 


J81 

1 PTI 

2 PTE 

3 TXI 

4 TXE 

BLK 

WHT 

BRN 

1 2A 

2 1A 

BLU.T/GRY.T 

WHT.T/ORN.T 

1 TIY 

2 TIYE 

3 BP 

4 BPE 

5 BZ 

6 BZE 

GRN 

BLK 

J82 

1 LVR 

2 PMS 

3 E 

BLU 

RED 

BLK 

J5 

1 2A 

2 1A 

PUR.T/BRN.T 

RED.T/GRN.T 

J2 

9 VD 

10 VDE 

11 MTR+ 

12 MTR- 

J5 

1 GPSCTXD- 

2 GPSCTXD+ 

3 GPSCRXD+ 

4 GPSCRXD- 

5 GND 

6 ALM+ 

7 ALM- 

8 +5V 

To JLR-10/20/30 

8 PCCTS 


CFQ-6912-20/30 

(JRC SUPPLY) 

9 NC 

RS232C PORT 

Dsub 15pin 

J4406 in CDC-1332 

1 RED 

2 RED_E 

3 GRN 

4 GRN_E 

5 BLU 

6 BLU_E 

7 HS 

8 HS_E 

9 VS 

10 VS_E 


CFQ-8914 

(JRC SUPPLY) 

VDR or 


NJU-85 


(OPTION) 

J3 

1 +12V 

2 GND 

3 GPSRXD- 

4 GPSRXD+ 

5 GPSTXD+ 

To GPS 

J1 

+ 

1 1A 

2 1A 

3 1A 

4 NC 

5 2A 

6 2A 

7 2A 

RED 

RED 

RED 

- 

BLK 

BLK 

BLK 

POWER INPUT 

CFQ-5436-5 


SHIP’S MAIN 

DC24V 

700Wmax 

7 

7-19



TB4303 

1 NAV1TXDE 

2 NAV1TXD- 

3 NAV1TXD+ 

4 NAV1RXDE 

5 NAV1RXD- 

6 NAV1RXD+ 

7 GPSTXD- 

8 GPSTXD+ 

9 GPSRXD- 

10 GPSRXD+ 

11 NAV2RXD- 

12 NAV2RXD+ 

13 ARPATXD- 

14 ARPATXD+ 

15 ARPAALM- 

16 ARPAALM+ 

17 SYSALM- 

18 SYSALM+ 

19 EVENT- 

20 EVENT+ 

21 COMPAS- 

22 COMPAS+ 


NMEA0183 

OUTPUT 

NMEA0183 

INPUT 

GPS 

OUTPUT 

GPS 

INPUT 

NMEA0183 

INPUT 

NMEA0183 

OUTPUT 

CONTACT 

OUT 

CONTACT 

IN 

NMEA0183 

INPUT 

BRN 

PNK 

BLK 

ORG 

RED 

BLU 

PUR 

YEL 

WHT 

GRN 

WHT 

YEL 

WHT 

BLU 

2 

1 

TB4301 

1 PWRIN- 

2 PWRIN+ 

3 PWROUT- 

4 PWROUT+ 

5 VDINE 

6 VDIN 

7 VDOUTE 

8 VDOUT 

9 TRGINE 

10 TRGIN 

11 TRGOUTE 

12 TRGOUT 

13 BPINE 

14 BPIN 

15 BPOUTE 

16 BPOUT 

17 BZINE 

18 BZIN 

19 BZOUTE 

20 BZOUT 

21 MTRINE 

22 MTRIN- 

23 MTRIN+ 

24 MTROUTE 

25 MTROUT- 

26 MTROUT+ 

INTER SWITCH 

OPTION 


TB10 

1 1/R1 

2 2/S1 

3 3/S2 

4 S3 

5 5/R2 


TB20 

1 LOGP+ 

2 LOGP- 

3 LOGS+ 

4 LOGS- 


NKE-2103-6/6HS SCANNER UNIT 

TB4302 

1 RBVDE 

2 RBVD 

3 TRGOE 

4 TRGO 

5 BPOE 

6 BPO 

7 BZOE 

8 BZO 

9 VDOE 

10 VDO 

SLAVE OUTPUT 

CFQ-8914 

(JRC SUPPLY) 

J8 

1 NC 

2 PCRXD 

3 PCTXD 

4 NC 

5 GND 

6 NC 

7 PCRTS 

8 PCCTS 

9 NC 

RS232C PORT 

J5 

1 GPSCTXD- 

2 GPSCTXD+ 

3 GPSCRXD+ 

4 GPSCRXD- 

5 GND 

6 ALM+ 

7 ALM- 

8 +5V 

To JLR-10/20/30 

RED 

RED 

RED 

BLK 

BLK 

BLK 

J3 

1 1A 

2 1A 

3 1A 

4 NC 

5 2A 

6 2A 

7 2A 

J1 

POWER INPUT 

1 2A 

2 1A 

+ 

- 

J3 

1 +12V 

2 GND 

3 GPSRXD- 

4 GPSRXD+ 

5 GPSTXD+ 

To GPS 

TB4310 

1 MOTOR- 

2 MOTOR- 

3 TRX- 

4 MOTOR+ 

5 MOTOR+ 

6 TRX+ 

7 GND 

8 +12V 

9 COM- 

10 COM+ 

11 BZE 

12 BZ 

13 BPE 

14 BP 

15 TRGE 

16 TRG 

17 VDE 

18 VD 

J2 

1 M- 

2 M- 

3 M+ 

4 M+ 

5 2A 

6 GND 

7 VDE 

8 +12V 

9 1A 

10 VD 

11 MTR+ 

12 BZ 

13 MTR- 

14 TRGE 

15 TRG 

16 BP 

J4406 in CDC-1332 

1 RED 

2 RED_E 

3 GRN 

4 GRN_E 

5 BLU 

6 BLU_E 

7 HS 

8 HS_E 

9 VS 

10 VS_E 


POWER 

OUTPUT 

+12V 

OUTPUT 

SLAVE 

INPUT 

BLU.T/GRY.T 

BLK.T/SKY.T 

YEL.T/PNK.T 

PUR.T/BRN.T 

WHT.T/ORN.T 

RED.T/GRN.T 

BLK.T/SKY.T 

BLK 

YEL.T/PNK.T 

1 2A 

2 1A 

YEL 

GRN 

WHT 

ORN 


CFQ-6912-20/30 

(JRC SUPPLY) 

ORN 

J1 

1 ETIY 

2 AGND 

3 EXBP 

4 AGND 

5 EXBZ 

6 AGND 

J2 

9 VD 

10 VDE 

11 COM+ 

12 COM- 

To 


WHT 

BLK 

WHT 

BRN 

J81 

1 PTI 

2 PTE 

3 TXI 

4 TXE 

BLU 

RED 

BLK 

J82 

1 LVR 

2 PMS 

3 E 

NJU-85 


(OPTION) 


fitted on ships compliant to IMO. 

J4 

BLU.T/GRY.T 

WHT.T/ORN.T 

J5 

GRN 

BLK 

1 2A 

2 1A 

PUR.T/BRN.T 

RED.T/GRN.T 

NOTE: TB4310 7-8 



1- 

1+ 

1- 

1+ 

RADR 

BUOY IN 

TRG 

OUT 

1- 

1+ 

B PULSE 

OUT 

3- 

2- 

2+ 

3+ 

1- 

1+ 

Z PLUSE 

OUT 

VIDEO 

OUTPUT 

250V-TTYCS-4 

250V-TTYCS-1 

250V-TTYCS-1 

AIS 

DGPS 

LOG(NMEA) 

250V-TTYCS-1 

JRC VDR 


2695111153 

INTER SWITCH 

(JRC SUPPLY) 


CABLE 

Fig.7-20: Terminal Board Connection Diagram of RADAR, Type JMA-5312-6/6HS 

250V-MPYCYS-7 


GYRO 

LOG(200P) 

Dsub 15pin 

VDR or 


CFQ-5436-5 


SHIP’S MAIN 

DC24V 

620Wmax 

7-20

6 

4 

2 

1 

INDEX > 7.Drawings > 7.4 Internal connection Diagram 

7.4 Internal connection Diagram 

ANTTENA 


fitted on ships compliant to IMO . 

RECEIVER UNIT NRG-229 

A102 

H-7ANRD0018 

DUMMY 

FILTER 

A301 

NJS6318 

1 

1 

IF CIRCUIT CAE-499 

S.G. 

V101 

M1555 

MAG 

2 

3 

2 3 

D.L 

J102 

IL-7P 

J101 

IL-9P 

GRN 

1.TGT 

2.TGTE 

3.TNL 

4.-15V 

5.TNI 

6.+15V 

7.GND 

1.BS3 

2.BS2 

3.BS1 

4.TNC 

5.MPS 

6.VDE 

7.VD 

8.+5V 

9.NC 

YEL 

A101 

NJC3316 

RF CIRCUIT 

CAF-595 

(W106) 

ZCRD1321※ 

MODULATOR UNIT 

NMA-551 

RECEIRVER UNIT 

INTERCONNECTION 

P3001 P3002 

B102 

CD202 CD201 

MD-12N1 MD-12N1 

CMA-902 

(W001) (W002) 

ZCRD1266※ 

ZCRD1267※ 

P1109 P1110 

SE 

C201 

0.01UF 1KV 

J2102 

IL-10P 

(W003) 

ZCRD1268※ 

T201 

(W103) 

ZCRD1318※ 

P2102 

P1111 

J13 

IL-6P 

1.SHORT 

2.MAG I 

3.X1 

4.X2 

5.TI 

6.TIE 

7.+15V 

8.GND 

9.NC 

10.NC 

11.NC 

12.NC 

1.RXD 

2.TXD 

3.+5V 

4.GND 

1.MONI 

2.GS 

3.GSE 

4.TGT 

5.TGTE 

6.TNL 

7.-15V 

8.TNI 

9.+15V 

10.GND 

11.TRG2 

1.BS3 

2.BS2 

3.BS1 

4.TNC 

5.MicPS 

6.VDINE 

7.VDIN 

8.+5V 

No.2 

No.1 

MODULATOR 

CIRCUIT 

CPA-264 

J1191 

IL-4P 

J1109 

J1110 

IL-G-8P IL-G-11P 

R201 

150Ω 

8W 

PULSE 

TRANS 

H-7LPRD0122 

3 5 

C202 

0.22UF 200V 

(W104) 

ZCRD1319※ 

R202 

2.7KΩ 

1/2W 

(W105) 

ZCRD1320※ 

P2103 

J2103 

350209-2 

1.X1 

2.X2 

J2101 

1586514-2 

1.SHORT 

2.MAGI 

3.X1 

4.X2 

5.TI 

6.TIE 

7.+15V 

8.GND 

9.NC 

10.NC 

1.φZ 

2.φZE 

3.φA 

4.φB 

5.+12V 

6.GND 

P13 

YEL 

BLK 

BLU 

WHT 

RED 

SHIELD 

(W017) 

BRAKE CIRCUIT A 

CFA-261 

120Ω 

BLAKE CIRCUIT B 

CFA-262 

×4 

30W 

S.G. 

CFR-229 

MAG FILTER 

CIRCUIT 

220pF×5 

R1 

R2 330Ω 

30W ×1 

R3 

R1 (W309) 

(W310) 

ZCRD1543※ 

ZCRD1544※ R4 

P1921 

P1911 

J1921 

J1911 

1-350210-0 1-350209-0 

C203 

0.22UF 

200V 



CMB-406 

1.MH 

2.NC 

3.MN 

S.G. S.G. 

P2101 

P1118 

J1 IL-G-6P 

1.TIY 

2.TIYE 

3.BP 

4.BPE 

5.BZ 

6.BZE 

(W308) 

ZCRD1542※ 

BLK.T 

(W201) 

ZCRD1273※ 

ZCRD1269※ 

(W004) 

P1941 J1941 

1.HMC NT 

2.+15V 

3.GND 

P1002 

1.MH 

2.NC 

3.MN 

1.+15V 

2.+12V 

3.GND 

4.G ND 

5.-15V 

6.10V 

7.10VE 

8.+5V 

1.MC T 

2.MBK 

3.TISTOP 

4.G ND 

5.MPS 

6.MIER 

J1104 J1103 J1118 

J1111 

B6P-SHF 

B8P-SHF 

B3P-SHF 

IL-G-12P 

J2 IL-G-4P 

1.BKS1 

2.BKS2 

1.BKH1 

2.NC 

3.BKH2 

1.+15V 

2.NC 

3.+15VE 

(W005) 

ZCRD1270※ 

to CMC-1205R J1112 

P1103 P1003 

S3B-XH-A 

T/R CONTROL CIRCUIT 

CMC-1205R 

BRAKE CONTROL CIRCUIT 

CCB-655 

(W305) 

ZCRD1456※ 

TB101 

1.BP+ 

2.BP- 

3.BZ+ 

4.BZ- 

5.TRIG+ 

6.TRIG- 

7.MTR+ 

8.MTR- 

9.MTRE 

10.VD+ 

11.VD- 

1.VD 

2.VDE 

3.MTR+ 

4.MTR- 

J1001 

350428-1 

1.M+ 

2.M- 

J1002 

1586514-2 

MSTBA2.5/11-G 

IL-2P 

1.VERR1 

2.E 

1.VERR 

2.E 

1.P 

2.NC 

3.N 

1.VERR1 

2.E 

J1912 

P1912 

P1212 

J1905 

P1905 

IL-2P 

BLU 

WHT 

BLK 

POWER SUPPLY 

CIRCUIT 

CBD-1682A 

J1004 J1003 

B9P-SHF B8P-SHF 

J 4 J 5 J 3 

350209-1 B02P-NV(LF)(SN) 

350209-1 

1.+15V 

2.+12V 

3.+8V 

4.GND 

5.-15V 

6.10V 

7.10VE 

8.+5V 

1.MCT 

2.MBK 

3.HSP 

4.HTER 

5.TISTOP 

6.C2 

7.G ND 

8.MPS 

9.MIER 

P1004 

P1104 

(W307) 

1-480700-0 

J1903 

P1903 

P1202 

(W304) 

ZCRD1316※ 

J1212 

RELAY FILTER 

CIRCUIT B3P-NV 

J1202 

CSC-656 

1.MU2 

PC1201 

2.GND 

3.MV2 

IL-3P 

1.HMCNT 

2.+15V 

3.GND 

DISPLAY UNIT 

P1505 

J1505 

B3P-VH 

B2P-VH 1.R1 

2.NC 

3.R2 

PC1501 

B201 H-7EPRD0035 

(W311) ZCRD1541※ 

ZCRD1545※ 

3.BLK 

1.RED 

J1511 

P1511 

J1211 

IL-3P 

P1211 

1.VERR 

2.E 

1.U1 

2.NC 

3.V1 

4.NC 

J1201 

B4P-VH 

P1201 

2.1A 

1.2A 

2.1A 

1.2A 

2.1A 

1.2A 

(W006) 

ZCRD1271※ 

J1114 

IL-G-3P 

J1112 J1113 

IL-G-9P 

IL-G-3P 

R2 

P1504 

J1504 

SAFETY SWITCH 

CSD-656 

J1105 

IL-G-2P 

1.+12V 

2.GND 

3.FAN_ERR1 

1.HTER1 

2.HVGATE1 

3.TISTOP1 

4.GND 

5.CNT 

6.+5V 

7.+15V 

8.STABY_REQ 

9.NC 

50/60kW 

J8 J1106 

IL-8P 

IL -G-5P 

R1 

1.2kΩ 

30W 

B6P-VH 

1. P 

2. N 

1.MU2 

2.NC 

3.MV2 

4.NC 

5.NC 

6.GND 

P3 

(W302) 

ZCRD1453※ 

BLK.T 

RED.T 

(W203) 

ZCRD1274※ 

1.+12V 

2.C2 

1.+12V 

2.GND 

3.FAN_ERR2 

1.PW1 

2.PW2 

3.PW3 

4.+24V 

5.GND 

1.PTI 

2.PTE 

3.LVR 

4.PMS 

5.GND 

6.TXI 

7.TXE 

8.NC 

CFA-255 

BRAKE CIRCUIT 

1.M1 

2.NC 

3.M2 

4.NC 

5.M3 

J1502 

1.S1 

2.S2 

3.S3 

4.S4 

5.S5 

6.S6 

J1503 

J1501 

P1501 

(W303) 

ZCRD1284※ 

9 

5 6 

S101 

S-32F 

2 3 

(W008) 

ZCRD1283※ 

P1105 

P1113 P1114 

P1502 

WHT 

RED 

(W301) 

ZCRD1322※ 

8 

RED 

BLU 

YEL 

RED 

BLU 

YEL 

to CCB-655 J1941 

AC100V 

MOTOR DRIVER 

CBD-2001 

WC1 

P1503 

FAN 

(W018) 

ZCRD1275※ 

BLK.T 

RED.T 

TB102 

(W010) 

ZCRD1272※ 

B104 

(W308) 

ZCRD 1542※ 

W401 7ZCRD1509 

B101 

MOTOR 

CBP-205 

J1112 

P1112 

V 

HEATER CONTROL PART 

CHG-215 

(OPTION) 

U 

UTH 

4 

3 

2 

1 

W1 

V1 

U1 

MOTOR 

H-7BDRD0049 

WHT.T 

+48VG 

+48V 

B103 FAN 

J82 

1.LVR 

2.PMS 

3.E 

J81 

1.PTI 

2.PTE 

3.TXI 

4.TXE 

TH101 

V 

U 

UTH 

4 

3 

2 

1 

W1 

V1 

U1 

TR101 

(200W) 

WH T.T 

+48VG 

+48V 

P82 

BLU 

RED 

BLK 

P81 

WHT 

BLK 

WHT 

BRN 

DISPLAY UNIT 

SCANNER INTERCONNECTION 

CAX-13 

S.G. 

7ZCRD1279※ 

PERFORMANCE 

MONITOR 

NJU-84 

(OPTION) 

7 

ENCODER CHT-71A 

Fig.7-21: Internal Connection Diagram of SCANNER UNIT NKE-1130 (100/100/115V, JMA-5332-12) 

7-21

6 

4 

2 

1 


ANTTENA 




A102 

H-7ANRD0018 

DUMMY 

FILTER 

A301 

NJS6318 

1 

1 

IF CIRCUIT CAE-499 

S.G. 

V101 

M1555 

MAG 

2 

3 

2 3 

D.L 

J102 

IL-7P 

J101 

IL-9P 

GRN 

1.TGT 

2.TGTE 

3.TNL 

4.-15V 

5.TNI 

6.+15V 

7.GND 

1.BS3 

2.BS2 

3.BS1 

4.TNC 

5.MPS 

6.VDE 

7.VD 

8.+5V 

9.NC 

YEL 

A101 

NJC3316 

RF CIRCUIT 

CAF-595 

(W106) 

ZCRD1321※ 


NMA-551 

RECEIRVER UNIT 


P3001 P3002 

B102 

CD202 CD201 

MD-12N1 MD-12N1 

CMA-902 

(W001) (W002) 

ZCRD 1266※ 

ZCRD1267※ 

P1109 P1110 

SE 

C201 

0.01UF 1KV 

J2102 

IL-10P 

(W003) 

ZCRD1268※ 

T201 

(W103) 

ZCRD1318※ 

P2102 

P1111 

J13 

IL-6P 

1.SHORT 

2.MAG I 

3.X1 

4.X2 

5.TI 

6.TIE 

7.+15V 

8.GND 

9.NC 

10.NC 

11.NC 

12.NC 

1.RXD 

2.TXD 

3.+5V 

4.GND 

1.MONI 

2.GS 

3.GSE 

4.TGT 

5.TGTE 

6.TNL 

7.-15V 

8.TNI 

9.+15V 

10.GND 

11.TRG2 

1.BS3 

2.BS2 

3.BS1 

4.TNC 

5.MicPS 

6.VDINE 

7.VDIN 

8.+5V 

No.2 

No.1 

MODULATOR 

CIRCUIT 

CPA-264 

J1191 

IL-4P 

J1109 

J1110 


R201 

150Ω 

8W 

PULSE 

TRANS 

H-7LPRD0122 

3 5 

C202 

0.22UF 200V 

(W104) 

ZCRD1319※ 

R202 

2.7KΩ 

1/2W 

(W105) 

ZCRD1320※ 

P2103 

J2103 

350209-2 

1.X1 

2.X2 

J2101 

1586514-2 

1.SHORT 

2.MAGI 

3.X1 

4.X2 

5.TI 

6.TIE 

7.+15V 

8.GND 

9.NC 

10.NC 

1.φZ 

2.φZE 

3.φA 

4.φB 

5.+12V 

6.GND 

P13 

YEL 

BLK 

BLU 

WHT 

RED 

SHIELD 

(W017) 

BRAKE CIRCUIT A 

CFA-261 

120Ω 

BLAKE CIRCUIT B 

CFA-262 

×4 

30W 

S.G. 

CFR-229 

MAG FILTER 

CIRCUIT 

220pF×5 

R1 

R2 330Ω 

30W ×1 

R3 

R1 (W309) 

(W310) 

ZCRD1543※ 

ZCRD1544※ R4 

P1921 

P1911 

J1921 

J1911 

1-350210-0 1-350209-0 

C203 

0.22UF 

200V 



CMB-406 

1.MH 

2.NC 

3.MN 

S.G. S.G. 

P2101 

P1118 

J1 IL-G-6P 

1.TIY 

2.TIYE 

3.BP 

4.BPE 

5.BZ 

6.BZE 

(W308) 

ZCRD1542※ 

BLK.T 

(W201) 

ZCRD1273※ 

ZCRD1269※ 

(W004) 

1.HMC NT 

2.+15V 

3.GND 

P1002 

1.MH 

2.NC 

3.MN 

1.+15V 

2.+12V 

3.GND 

4.G ND 

5.-15V 

6.10V 

7.10VE 

8.+5V 

1.MC T 

2.MBK 

3.TISTOP 

4.G ND 

5.MPS 

6.MIER 

J1104 J1103 J1118 

J1111 

B6P-SHF 

B8P-SHF 

B3P-SHF 

IL-G-12P 

J2 IL-G-4P 

1.BKS1 

2.BKS2 

1.BKH1 

2.NC 

3.BKH2 

P1941 J1941 

1.+15V 

2.NC 

3.+15VE 

(W005) 

ZCRD1270※ 

to CMC-1205R J1112 

P1103 P1003 

S3B-XH-A 


CMC-1205R 

BRAKE CONTROL CIRCUIT 

CCB-655 

(W305) 

ZCRD1456※ 

TB101 

1.BP+ 

2.BP- 

3.BZ+ 

4.BZ- 

5.TRIG+ 

6.TRIG- 

7.MTR+ 

8.MTR- 

9.MTRE 

10.VD+ 

11.VD- 

1.VD 

2.VDE 

3.MTR+ 

4.MTR- 

J1001 

350428-1 

1.M+ 

2.M- 

J1002 

1586514-2 

MSTBA2.5/11-G 

IL-2P 

1.VERR1 

2.E 

1.VERR 

2.E 

1.P 

2.NC 

3.N 

1.VERR1 

2.E 

J1912 

P1912 

P1212 

J1212 

RELAY FILTER 

CIRCUIT B3P-NV 

J1202 

CSC-656 

1.MU2 

PC1201 

2.GND 

3.MV2 

IL- 3P 

1.HMCNT 

2.+15V 

3.GND 

BLU 

J1905 

P1905 

IL-2P 

POWER SUPPLY 

CIRCUIT 

CBD-1682A 

J1004 J1003 


J 4 J 5 J 3 

350209-1 B02P-NV(LF)(SN) 

350209-1 

1.+15V 

2.+12V 

3.+8V 

4.GND 

5.-15V 

6.10V 

7.10VE 

8.+5V 

1.MCT 

2.MBK 

3.HSP 

4.HTER 

5.TISTOP 

6.C2 

7.GND 

8.MPS 

9.MIER 

P1004 

P1104 

(W307) 

1-480700-0 

J1903 

P1903 

P1202 

WHT 

BLK 

(W30 4) 

ZCRD1316※ 

DISPLAY UNIT 

P1505 

J1505 

B3P-VH 

B2P-VH 1.R1 

2.NC 

3.R2 

PC1501 

B201 H-7EPRD0034 

(W311) ZCRD1541※ 

ZCRD1545※ 

3.BLK 

1.RED 

J1511 

P1511 

J1211 

IL-3P 

P1211 

1.VERR 

2.E 

1.U1 

2.NC 

3.V1 

4.NC 

2.1A 

1.2A 

2.1A 

1.2A 

2.1A 

1.2A 

(W006) 

ZCRD1271※ 

J1114 

IL-G-3P 

J1112 J1113 

IL-G-9P 

IL-G-3P 

R2 

J1201 

B4P-VH 

P1201 

J1504 

P1504 

J1105 

IL-G-2P 

1.+12V 

2.GND 

3.FAN_ERR1 

1.HTER1 

2.HVGATE1 

3.TISTOP1 

4.GND 

5.CNT 

6.+5V 

7.+15V 

8.STABY_REQ 

9.NC 

50/60kW 

J8 J1106 

IL-8P 

IL -G-5P 

R1 

1.2kΩ 

30W 

B6P-VH 

1. P 

2. N 

1.MU2 

2.NC 

3.MV2 

4.NC 

5.NC 

6.GND 

SAFETY SWITCH 

CSD-656 

P3 

(W302) 

ZCRD1453※ 

BLK.T 

RED.T 

(W203) 

ZCRD1274※ 

1.+12V 

2.C2 

1.+12V 

2.GND 

3.FAN_ERR2 

1.PW1 

2.PW2 

3.PW3 

4.+24V 

5.GND 

1.PTI 

2.PTE 

3.LVR 

4.PMS 

5.GND 

6.TXI 

7.TXE 

8.NC 

CFA-255 

BRAKE CIRCUIT 

1.M1 

2.NC 

3.M2 

4.NC 

5.M3 

J1502 

1.S1 

2.S2 

3.S3 

4.S4 

5.S5 

6.S6 

J1503 

J1501 

P1501 

(W303) 

ZCRD1284※ 

9 

5 6 

S101 

S-32F 

2 3 

(W008) 

ZCRD1283※ 

P1105 

P1113 P1114 

P1502 

WHT 

RED 

to CCB-655 J1941 

(W301) 

ZCRD1322※ 

8 

RED 

BLU 

YEL 

SCANNER INTERCONNECTION 

CAX-13 


RED 

BLU 

YEL 

AC220V 

MOTOR DRIVER 

CBD-2000 

WC1 

FAN 

B104 

P1503 

(W018) 

ZCRD1275※ 

BLK.T 

(W308) 

ZCRD1542※ 

RED.T 

TB102 

(W010) 

ZCRD1272※ 

W401 7ZCRD1509 

B101 

MOTOR 

CBP-205 

J1112 

P1112 

V 

HEATER CONTROL PART 

CHG-215 

(OPTION) 

U 

UTH 

4 

3 

2 

1 

W1 

V1 

U1 

MOTOR 

H-7BDRD0049 

WHT.T 

+48VG 

+48V 

B103 FAN 

J82 

1.LVR 

2.PMS 

3.E 

J81 

1.PTI 

2.PTE 

3.TXI 

4.TXE 

TH101 

V 

U 

UTH 

4 

3 

2 

1 

W1 

V1 

U1 

TR101 

(200W) 

WH T.T 

+48VG 

+48V 

P82 

BLU 

RED 

BLK 

P81 

WHT 

BLK 

WHT 

BRN 

DISPLAY UNIT 

S.G. 

7ZCRD1279※ 

PERFORMANCE 

MONITOR 

NJU-84 

(OPTION) 

Fig.7-22: Internal Connection Diagram of SCANNER UNIT NKE-1130 (220/230/240V, JMA-5332-12) 

7-22


ANTENNA 

A103 

NJC4002 



A104 

NJC9952 

FILTER 

DUMMY 

A301 

NJS6930 

3 

3 

S.G. 

V101 

M1568BS 

MAG 

1 2 

1 

2 

D.L 

A101 A102 

NJC3901M NJC3901M 

キ 

ミドリ 

(W106) 

ZCRD1258※ 

MODULATOR UNIT NMA-550 

CD202 CD201 

MD-12N1 MD-12N1 

C201 

0.01UF 1KV 

J2102 

IL-10P 

6 

4 

T1 

PULSE TANS 

(W103) 

ZCRD1255※ 

(W003) 

ZCRD1252※ 

P2102 

H-7LPRD0122 

No.2 

No.1 

2 

1 

R201 

150Ω 

8W 

3 5 

MODULATOR 

CIRCUIT 

CPA-264 

1.SHORT 

2.MAGI 

3.X1 

4.X2 

5.TI 

6.TIE 

P1111 

S.G. 

CFR-229 

MAG FILTER 

CIRCUIT 

220pF×5 

C202 

0.22UF 200V 

(W104) 

ZCRD1256※ 

P2103 

J2103 

350209-2 

7.+15V 

8.GND 

(W105) 

ZCRD1257※ 

1.X1 

2.X2 

J2101 

1586514-2 

9.NC 

10.NC 

R202 

2.7KΩ 

1/2W 

C203 

0.22UF 

200V 



CMB-404 

1.MH 

2.NC 

3.MN 

(W004) 

ZCRD1253※ 

1.SHORT 

2.MAGI 

3.X1 

4.X2 

5.TI 

6.TIE 

7.+15V 

8.GND 

9.NC 

10.NC 

11.NC 

12.NC 

S.G. 

S.G. 

P2101 

(W207) 

ZCRD1448※ 

3 

(W201) 

ZCRD1260※ 

BLK.T 

1 2 

P1303 

J1303 

1 2 3 

BLK.T 

(W107) 

ZCRD1259※ 

BLU 

WHT 

BLK 

P1118 

BLU 

WHT 

BLK 

1.HMCNT 

2.+15V 

3.GND 

BREAK CIRCUIT 

CFA-257 

1 

2 

3 

1 

2 

3 

P1503 

J1503 

IL -2P-S3EN2 

P1002 

R1 

10Ω,10W 

1.MH 

2.NC 

3.MN 

J1002 

1586514-2 

J1001 

350428-1 

POWER SUPPLY 

CIRCUIT 

CBD-1682A 

J1004 J1003 


1.+15V 

2.+12V 

3.+8V 

4.GND 

5.-15V 

6.X1 

7.X2 

8.+5V 

P1103 P1003 

(W307) 

ZCRD1450※ 

7 

RECEIVER UNIT NRG-162A 

J101 

BM15B-XASS-TE 

RECEIVER CIRCUIT 

CMA-866A 

1.+15V 

2.+12V 

3.G ND 

4.GND 

5.-15V 

6.10V 

7.10VE 

8.+5V 

1.BS3 

2.BS2 

3.BS1 

4.TNC 

5.MicPS 

6.VDINE 

7.VDIN 

8.+5V 

1.MONI 

2.GS 

3.GSE 

4.TGT 

5.TGTE 

6.TNL 

7.-15V 

8.TNI 

9.+15V 

10.GND 

11.TRG2 

1.RXD 

2.TXD 

3.+5V 

4.GND 

1.BS3 

2.BS2 

3.BS1 

4.TNC 

5.+5V 

6.-15V 

7.+15V 

8.GND 

9.TGT 

10.TGTE 

11.TNI 

12.VD_DC 

13.TNL 

14.VDE 

15.VD 


CMC-1205R 

1.MCT 

2.MBK 

3.TISTOP 

4.GND 

5.MPS 

6.MIER 

1.TIY 

2.TIYE 

3.BP 

4.BPE 

5.BZ 

6.BZE 

1.VD 

2.VDE 

3.MTR+ 

4.MTR- 

1.BP+ 

2.BP- 

3.BZ+ 

4.BZ- 

5.TRIG+ 

6.TRIG- 

7.MTR+ 

8.MTR- 

9.MTRE 

10.VD+ 

11.VD- 

J1109 

J1110 


1.PW1 

2.PW2 

3.PW3 

4.+24V 

5.GND 

1.HTER1 

2.HVGATE1 

3.TISTOP1 

4.GND 

5.CNT 

6.+5V 

7.+15V 

8.STABY_REQ 

9.NC 

1.+12V 

2.GND 

3.FAN_ERR1 

J1104 J1103 J1118 

J1111 

B6P-SHF 

B8P-SHF 

B3P-SHF 

IL-G-12P 

TB101 

MSTBA2.5/11-G 

50/60kW 

J8 J1106 

IL-8P 

IL -G -5P 

J1112 J1113 

IL-G-9P 

IL-G-3P 

J1191 

IL-4P 

J1505 IL- 3P -S 3EN2 

1.HMCNT 

2.+15V 

3.E 

アオ 

シロ 

クロ 

P1505 

GRN 

YEL 

BRN 

(W305) 

P125 

J125 

B3P-SHF-1AA 

9 

10 

4 

5 

6 

7 

8 

9 

10 

4 

5 

6 

7 

8 

B101 

1.MCNT- 

2.MCNT+ 

3.NC 

MOTOR CONTROL 

POWER CIRCUIT 

CBD-1779 

1.M+ 

2.M- 

J 4 J 5 J 3 

350209-1 350209-1 B02P-NV(LF)(SN) 

2.1A 

1.2A 

2.1A 

1.2A 

2.1A 

1.2A 

1.MCT 

2.MBK 

3.HSP 

4.HTER 

5.TISTOP 

6.C2 

7.G ND 

8.MPS 

9.MIER 

P1004 

P1301 

J1301 

P1104 

MOTOR 

BLU.T 

BLK.T 

(W301) 

P1502 

P3001 

P1502 

B4P-VH 

1.M+ 

2.NC 

3.M- 

4.NC 

P1109 P1110 

J1501 

1 

2 

3 

4 

1 

2 

3 

4 

(W001) 

ZCRD1251※ 

IL-G-3P-S3T2-SA 

J1105 

IL-G-2P 

1.+12V 

2.C2 

J1114 

IL-G-3P 

5 

6 

5 

6 

P1105 

RED 

WHT 

J1 IL-G-6P 

J2 IL-G-4P 

WHT 

RED 

7 

8 

7 

8 

SCANNER UNIT INTERCONNECTION 

CAX-15 

1.+12V 

2.GND 

3.FAN_ERR2 

P1302 

J1302 

(W006) 

ZCRD1254※ 

J13 

IL-6P 

1.φ Z 

2.φZE 

3.φA 

4.φ B 

5.+12V 

6.GND 

(W206) 

ZCRD1447※ 

B102 

SE 

P13 

YEL 

BLK 

BLU 

WHT 

RED 

SHIELD 

RED 

BLU 

YEL 

RED 

BLU 

YEL 

(W010) 

(W009) 

DISPLAY UNIT 

(W017) 

P1113 P1114 

B201 

FAN 

H-7BFRD0002 

B202 FAN 

WHT 

BLK 

WHT 

BRN 

BLU 

RED 

BLK 

P81 

P82 

J81 

J82 

1.PTI 

2.PTE 

3.TXI 

4.TXE 

1.LVR 

2.PMS 

3.E 

1.PTI 

2.PTE 

3.LVR 

4.PMS 

5.GND 

6.TXI 

7.TXE 

8.NC 

(W018) 

ZCRD1277※ 

ZCRD1280※ 

S.G. 

NJU-85 

(OPTION) 

PERFORMANCE 

MONITOR 

MOTOR CBP-168A / CBP-182 

1.2A 

2.1A 

J5 

350209-1 

1.2A 

2.1A 

J4 

350209-1 

1.MS1 

2.NC 

3.MS2 

J1504 

P1504 B3P-VH 

アカ太 

1.MPS 

2.MCT 

3.MBK 

ZCRD1451※ 

(W208) 

HEATER CONTROL 

PART 

CHG-216 

(OPTION) 

P1501 

DISPLAY UNIT 

ZCRD1494※ 

(W308 

ZCRD1449※ 

(W302) 

2 1 

TH101 

TR101 

(100W) 

5 4 

(W401) 

ZCRD1508※ 

シロ太 

TB105 

U 

U 

7 

8 

V 

V 

SAFETY SWITCH 

CSD-653 

H-7BFRD0002 

S101 

S-32 

UTH 

UTH 

WHT.T 


Fig.7-23: Internal Connection Diagram of SCANNER UNIT NKE-2254-7/9/6HS (JMA-5322-7/9/6HS) 

7-23

5 

2 

4 

1 




7ZCRD1280※ 

PERFORMANCE 

MONITOR 

(OPTION) 

MAGNETRON 

V101 

MAF1565N 

MAG 

ANTENNA NAX-16B-4/6 

DUMMY 

FILTER 

NJU-85 

A301 

NJS6930 

E101 

NJT1969 

A101 

1.TUNE 

2.+5V 

3.GND 

4.NC 

5.IF 

IF AMP CIRCUIT (PC301) 

CAE-529-1 

J201 

1.MPS 

2.PW3 

3.PW2 

4.PW1 

5.MCT 

6.MBK 

7.+15V 

8.AGND 

9.-7V 

10.BP 

11.HSP 

12.TI 

13.+8V 

14.MOD ID 

15.NC 

J202 

1.TIY 

2.AGND 

3.MAG.I 

4.HTER 

5.HVER 

6.C2 

7.BZ 

J203 

1.PTI 

2.PTE 

3.LVR 

4.PMS 

5.GND 

6.TXI 

7.TXE 

T201-15 

T201-16 

POWER SUPPLY 

CIRCUIT 

(PC1001) 

CBD-1783 

J1003 

1.MH 

3.MN 

6.AGND 

J1001 

1.2A 

2.1A 

MODULATOR CIRCUIT 

(PC201) 

CME-363 

J1 

1.ETIY 

2.AGND 

3.EXBP 

4.AGND 

5.EXBZ 

J3 

1.2A 

2.1A 

J301 

1.MPS 

2.PW3 

3.PW2 

4.PW1 

5.MCT 

6.MBK 

7.+15V 

8.AGND 

9.-7V 

10.BP 

11.HSP 

12.TI 

13.+8V 

14.MOD ID 

15.NC 

J302 

1.TIY 

2.AGND 

3.MAG.I 

4.HTER 

5.HVER 

6.C2 

7.BZ 

J303 

1.PTI 

2.PTE 

3.LVR 

4.PMS 

5.GND 

6.TXI 

7.TXE 

J18 

1.HMCNT 

2.+15V 

3.GND 

J2 

1.VD 

2.VDE 

3.COM+ 

4.COM- 

B102 

J206 

1.MH 

1.ΦZ 

2.E 

3.ΦA 

4.ΦB 

5.+12V 

6.F.G. 

J8 

1.PTI 

2.PTE 

3.LVR 

4.PMS 

5.E 

6.TXI 

7.TXE 

8.NC 

P8 

YEL 

BLK 

BLU 

WHT 

RED 

SHIELD 

SE 

J1503 

1.2A 

2.1A 

SAFETY SWITCH 

WS101 

DISPLAY 

UNIT 

DISPLAY 

UNIT 

SCANNER UNIT INTERCONNECTION 

CAX-10 

DISPLAY 

UNIT 

J81 P81 

1.PTI WHT 

2.PTE BLK 

3.TXI WHT 

4.TXE BRN 

J82 P82 

1.LVR BLU 

2.PMS RED 

3.E BLK 

J1501 

1.MPS 

2.MCT 

3.MBK 

J209 

1.MPS 

2.MCT 

3.MBK 

J210 

1.C2G 

2.C2 

S.G. 

YEL GRN 

A103 

NJC4002 

TRANSMITTER/RECEIVER UNIT NZT-2103 TRANSMITTER/RECEIVER UNIT 


CMK-599 


(RECEIVER UNIT INTERCONNECTION CMA-823) 

A102 

MIC 

(W204) 

ZCRD1312※ 

(W103) 

ZCRD1300※ 

(W105) 

ZCRD1302※ 

J204 

1.2A 

2.1A 

BREAK CIRCUIT CFA-252 

(W110) ZCRD1307※ 

(W107) 

ZCRD1304※ 

ZCRD1306※ 

MOTOR 

B101 

H-7BDRD0048 

MORTOR CBP-202 

J1502 

1.M+ 

2.NC 

3.M- 

4.NC 

J125 

1.MCNT+ 

2.MCNT- 

3.NC 

J1505 

1.HMCNT 

2.+15V 

3.AGND 

MOTOR CONTROL POWER CIRCUIT 

(PC1501) 

CBD-1779 

J4 

1.2A 

2.1A 

J5 

1.2A 

2.1A 

S.G. 

(W101) 

ZCRD1289※ 

(W102) 

ZCRD1290※ 

(W106) 

ZCRD1303※ 

(W111) 

ZCRD1308※ 

D.L 

WV101 


S.G. 

CFR-234 

MAG FILTER 

CIRCUIT 

100pF×3 

A104 

NJC9952 

FCX68 FCX68 

J1002 

1.+15V 

2.+12V 

3.+8V 

4.AGND 

5.-15V 

6.X1 

7.X2 

8.+5V 

9.HTER 

10.HVER 

3.MN 

(W104) 

ZCRD1301※ J205 

1.+15V 

2.+12V 

3.+8V 

4.AGND 

5.-15V 

6.X1 

7.X2 

8.+5V 

9.HTER 

10.HVER 

TB1 

1-2short : Nomal Speed 

2-3short : High Speed 

J208 

(W108) 

ZCRD1305※ 

J1504 

1.MS1 

2.NC 

3.MS2 

Fig.7-24: Internal Connection Diagram of SCANNER UNIT NKE-2103-6/6HS (JMA-5312-6/6HS) 

7-24


NCT-59A 

GYRO INTERFACE UNIT 

(OPTION) 

P/J4201 

P/J4404 

CDC-1332 

RADAR PROCESS CIRCUIT 

PC440 

P/J4403 

NBD-34A 

PLOTTER 

CONTROL CIRCUIT 

(OPTION) 

P/J4901 

P/J4407 

GYRO LOG 

TB10 TB20 

P/J4402 

J302 

P/J4406 

P/J4405 

J301 

P/J4401 

J4601 J1 


ARPA/ATA 

PROCESS CIRCUIT 

for TT 

(OPTION) 

W404 

10PIN 

NQA-2103 

AIS PROCESS 

CIRCUIT 

(OPTION) 

P/J5102 

ISW SLAVE NMEA SCANNER 

TB4301 TB4302 TB4303 TB4310 

W418 

14PIN 

P/J4311 

CQD-1937A 

TERMINAL BOARD 

PC430 

P/J4309 P/J4302 P/J4310 P/J4303 P/J4301 

W413 

26PIN 

W412 

24PIN 

J303 

P/J4109 P/J4104 P/J4110 P/J4106 P/J4105 

P/J4111 

P/J4113 

NQA-2123 

I/F UNIT 

P/J4108 

P/J4107 

P/J4103 

P/J4102 

1A 1A 2A 2A 

P/J5103 

1A 1A 2A 2A 

P/J5101 

NBD-818A 

POWER SUPPLY UNIT 

EXT-RGB 

DVI 

P/J51004 

3 

2 

1 

7 

POWER 

SCANNER 

GPS 

KEYBOARD 

GPS 

COMPASS 

LCD 

POWER 

RGB 

NMEA 

J1 

J2 

J3 

J4 

J5 

J6 

J7 

J8 

W419 

6PIN 

NOTE: Performance monitor, ARPA/ATA 

Process Circuit, AIS Process Circuit and 

GYRO Interface Unit must be fitted on 

ships compliant to IMO. 

TB303 

W411 

18PIN 

W410 

12PIN 

W405 

6PIN 

MONITOR/ 

KEYBOARD 

W417 

6PIN 

W416 

10PIN 

W423 

2PIN 

AUX 

W415 

30PIN 

W414 

32PIN 

W427 

UTP 

RJ45 

W403 

9PIN 

W402 

4PIN 

CB401 

Fig.7-25: Internal Connection Diagram of RADAR PROCESS UNIT NDC-1417 

7-25


H-CBF-38 

Inverter Circuit 

H-CML-771 

19inch LCD Panel 

H-CBP-173A 

Blower 

Circuit 

I/F Circuit 

H-CMH-2227 

H-CCK-989 

Brilliance 

Control 

Circuit 

RGB 

DVI 

FAN 

ALM 

DC12V 

BRILL 

RGB 15P 5m 

9P 5m 

DC12V 3P 5m 

7P 

NDC-1417 J7 

VIDEO 

NDC-1417 

AUX 

NDC-1417 J6 

VIDEO DC OUT 

Fig.7-26: Internal Connection Diagram of LCD MONITOR NWZ-173 

7-26


F3 

FH3 

F2 

FH2 

W421 

W422 

1 

2 

3 

4 

5 

6 

7 

8 

COM 

NO 

P/J4101 

1A 

1A 

1A 

1A 

M+ 

M+ 

1A2 

1A2 

K1 

1A 

1AK 

PC410 

CMH-2201 

I/F CURCUIT 

7 

P/J4114 

AUX 

W420 

Fig.7-27: Internal Connection Diagram of INTERFACE UNIT NQA-2123 

7-27


P/J6101 

P/J6103 

PC600 

CCK-979 

OPERATION CURCUIT 

SP601 

PS/2 

I/F 

PC610 

CQC-1204 

PS/2 

W603 

P/J6003 

P/J6004 

W604 

B601 

Radar Process Unit 

NDC-1417 

W601 

P/J6001 

P/J6002 

W602 

Fig.7-28: Internal Connection Diagram of OPERATION UNIT NCE-5171 

7-28


TB803 

1 

2 

3 

W802 

U2 

V2 

W2 

W803 

FL801 

U1 

V1 

1 

2 

E 

~ 

4 

3 

E 

U2 

V2 

W804 

INTERFACE 

CIRCUIT 

CMH-1994A 

U0 

V0 

W0 

P+ 

1 

3 

5 

7 

2 

4 

6 

8 

U1 

V1 

W2 

P- 

CB801 

U2 

V2 

P+ 

P- 

1 

2 

3 

4 

5 

6 

7 

8 

P/J810 

7 

W801 

U0 

V0 

W0 

1 

2 

3 

TB801 

Fig.7-29: Internal Connection Diagram of JUNCTION BOX NQE-3151A (JMA-5332-12) 

7-29

INDEX > 7.Drawings > 7.5 Circuit Schematic 

7.5 Circuit Schematic 

Fig.7-30: Circuit Schematic of CQD-1937A 

7-30


7 

Fig.7-31: Circuit Schematic of CMH-2201 page 1 

7-31



7-32


7 


7-33


7-34

For further information,contact: 

Not use the asbestos 

CODE No.7ZPRD0715 

Marine Service Department 

Telephone : +81-3-3492-1305 

Facsimile : +81-3-3779-1420 

e-mail : tmsc@jrc.co.jp 

AMSTERDAM Branch 

Telephone : +31-20-658-0750 

Facsimile : +31-20-658-0755 

e-mail : service@jrcams.nl 

SEATTLE Branch 

Telephone : +1-206-654-5644 

Facsimile : +1-206-654-7030 

e-mail : service@jrcamerica.com 

01ETM 

URL 

http://www.jrc.co.jp 

FEB. 2009 Edition 1 JRC 

ISO 9001, ISO 14001 Certified 

Printed in Japan

JMA-5300MkIIsm

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