jma-5200mk2 field service manual

MARINE RADARMARINE RADAREQUIPMENTEQUIPMENT

FIELD SERVICEFIELD SERVICEMANUALMANUAL

JMA-5212-4/6JMA-5212-4/6JMA-5222-7/9JMA-5222-7/9JMA-5212-4HS/6HSJMA-5212-4HS/6HS

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Contents

Chapter 1_Equipment Overview

1.1. Overview ................................................................................................................................ 1-1 1.2. Scanner Unit .......................................................................................................................... 1-1 1.3. Display System ...................................................................................................................... 1-2 1.4. Principal Functions................................................................................................................. 1-2

Chapter 2_Equipment Overview

2.1. Configuration.......................................................................................................................... 2-1 2.1.1. Scanners and Transmitted Output Powers ..................................................................... 2-1 2.1.2. Radar Configuration and Ship's Mains............................................................................ 2-2

2.2. Power System Diagram ......................................................................................................... 2-4 2.3. Functional System Diagram ................................................................................................... 2-6

2.3.1. Scanner Unit ................................................................................................................... 2-6 2.3.2. Display System ............................................................................................................... 2-9

2.4. Input/Output Specifications .................................................................................................. 2-12 2.4.1. SCANNER (J2) ............................................................................................................. 2-12 2.4.2. GPS (J3) ....................................................................................................................... 2-13 2.4.3. GYRO/COMPASS (J5).................................................................................................. 2-13 2.4.4. AIS/NMEA (J6).............................................................................................................. 2-14

2.5. DIP-SW/Jumper Setting ....................................................................................................... 2-15 2.5.1. Power Circuit CBD-1702A............................................................................................. 2-15 2.5.2. GYRO I/F Circuit CMJ-304E ......................................................................................... 2-17 2.5.3. Radar Processing Circuit CDC-1350 ............................................................................ 2-20 2.5.4. AIS Processing Circuit CDC-1353 ................................................................................ 2-20 2.5.5. T/R Control Circuit CMC-1205R.................................................................................... 2-21

Chapter 3_Service Parts

3.1. Service Parts Lists for the Units ............................................................................................. 3-1 3.1.1. Spare Parts ..................................................................................................................... 3-1 3.1.2. Special Parts ................................................................................................................... 3-2 3.1.3. NKE-2103 (JMA-5212-4/6/4HS/6HS).............................................................................. 3-2 3.1.4. NKE-2254 (JMA-5222-7/9).............................................................................................. 3-3 3.1.5. NCD-4380....................................................................................................................... 3-3

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3.2. Exploded Diagrams................................................................................................................ 3-4 3.2.1. NKE-2103 ....................................................................................................................... 3-4 3.2.2. NKE-2254 ....................................................................................................................... 3-8 3.2.3. NDC-1460..................................................................................................................... 3-12 3.2.4. NCE-7699A................................................................................................................... 3-16

Chapter 4_Replacement of Major Units

4.1. Scanner Unit .......................................................................................................................... 4-1 4.1.1. Precautions for replacing parts in the scanner unit ......................................................... 4-1 4.1.2. Parts Replacement for the Scanner Unit NKE-2254 ....................................................... 4-2 4.1.3. Magnetron replacement / NKE-2254............................................................................... 4-3 4.1.4. Motor replacement / NKE-2254....................................................................................... 4-5 4.1.5. Motor drive circuit board replacement / NKE-2254 ......................................................... 4-7 4.1.6. Modulator circuit (CPA-264) replacement / NKE-2254.................................................... 4-8 4.1.7. Power supply circuit board (CBD-1682A) replacement / NKE-2254 ............................. 4-10 4.1.8. T/R control circuit (CMC-1205R) replacement / NKE-2254............................................4-11 4.1.9. Receiver (NRG-162A) replacement / NKE-2254........................................................... 4-13 4.1.10. Encoder replacement / NKE-2254 ................................................................................ 4-15 4.1.11. Magnetron fan replacement / NKE-2254....................................................................... 4-17 4.1.12. Modulator fan replacement / NKE-2254........................................................................ 4-18 4.1.13. NKE-2103 scanner unit parts replacement ................................................................... 4-21 4.1.14. Magnetron Replacement for the NKE-2103 .................................................................. 4-22 4.1.15. Motor Replacement for the NKE-2103 .......................................................................... 4-24 4.1.16. Motor Control Power Circuit Replacement for the NKE-2103 ....................................... 4-25 4.1.17. Modulation Circuit (CME-363) Replacement for the NKE-2103 .................................... 4-26 4.1.18. Power Circuit (CBD-1783) Replacement for the NKE-2103.......................................... 4-27 4.1.19. Receiver (NRG-610) Replacement for the NKE-2103................................................... 4-28 4.1.20. Encoder Replacement for the NKE-2103...................................................................... 4-30

4.2. Display System .................................................................................................................... 4-32 4.2.1. Brilliance Control Circuit CCK-970 ................................................................................ 4-32 4.2.2. Power Supply Unit NBD-866A ...................................................................................... 4-34 4.2.3. Radar Processing Circuit CDC-1350 ............................................................................ 4-36 4.2.4. Battery .......................................................................................................................... 4-38 4.2.5. Target Tracking (TT) Unit NCA-877A ............................................................................ 4-40 4.2.6. AIS Processing Circuit NQA-2155 ................................................................................ 4-41 4.2.7. GYRO I/F Circuit CMJ-304E ......................................................................................... 4-43 4.2.8. GYRO I/F Circuit Fuses ................................................................................................ 4-45

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4.2.9. Operation Circuit CCK-979 for the Standard Operation Unit ......................................... 4-47 4.2.10. PS2 Connector Circuit CQC-1204 for the Standard Operation Unit .............................. 4-49 4.2.11. Trackball TRD-101S(BK)N1 for the Standard Operation Unit........................................ 4-51

Chapter 5_Program Update

5.1. Main Program Update Procedure........................................................................................... 5-1 5.1.1. Items to be Provided ....................................................................................................... 5-1 5.1.2. Update Procedure........................................................................................................... 5-1

5.2. AIS Processing Circuit Update Procedure ............................................................................. 5-2 5.2.1. Items to be Provided ....................................................................................................... 5-2 5.2.2. Update Procedure........................................................................................................... 5-2

5.3. How to Check the Version...................................................................................................... 5-3

Chapter 6_Troubleshooting

6.1. Operation Check .................................................................................................................... 6-1 6.1.1. Self-diagnostic Function (Self Test)................................................................................. 6-2 6.1.2. Display Unit Check (Monitor Test)................................................................................... 6-3 6.1.3. Operation Unit Check (Keyboard Test)............................................................................ 6-4 6.1.4. Performance Monitor (MON Display) .............................................................................. 6-5 6.1.5. System Alarm Log Display (Alarm List/Log) .................................................................... 6-5 6.1.6. System Information Display (System INFO).................................................................... 6-6

6.2. Error Message Lists ............................................................................................................... 6-7 6.2.1. Error Messages for the Scanner Unit .............................................................................. 6-7 6.2.2. Error Messages for the Display System........................................................................ 6-14 6.2.3. Error Messages for the External Input-Output Equipment ............................................ 6-19

6.3. Examples of Trouble ............................................................................................................ 6-31 6.3.1. Internal Circuits ............................................................................................................. 6-31 6.3.2. External Equipment....................................................................................................... 6-33

Chapter 7_Drawings

7.1. Outline Drawings.................................................................................................................... 7-1 7.1.1. Outline Drawing of the Scanner Unit NKE-2254-7 .......................................................... 7-2 7.1.2. Outline Drawing of the Scanner Unit NKE-2254-9 .......................................................... 7-3 7.1.3. Outline Drawing of the Scanner Unit NKE-2103-4/4HS .................................................. 7-4 7.1.4. Outline Drawing of the Scanner Unit NKE-2103-6/6HS .................................................. 7-5 7.1.5. Outline Drawing of the Display System NDC-1460 ......................................................... 7-6 7.1.6. Outline Drawing of the Display Unit NWZ-164 ................................................................ 7-7

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7.1.7. Outline Drawing of the Operation Unit NCE-7699A ........................................................ 7-8 7.1.8. Outline Drawing of the Multi-function Operation Unit NCE-7729A .................................. 7-9 7.1.9. Outline Drawing of the Rectifier NBA-5111 (Option)...................................................... 7-10

7.2. System Diagrams..................................................................................................................7-11 7.2.1. Overall System Diagram of the Radar JMA-5222-7/9 ....................................................7-11 7.2.2. Overall System Diagram of the Radar JMA-5212-4/6/4HS/6HS ................................... 7-12

7.3. Inter-Unit Connection Diagram............................................................................................. 7-13 7.3.1. Inter-Unit Connection Diagram of the JMA-5222-7/9 .................................................... 7-13 7.3.2. Inter-Unit Connection Diagram of the JMA-5212-4/6/4HS/6HS .................................... 7-14

7.4. Unit Internal Connection Diagrams ...................................................................................... 7-15 7.4.1. Internal Connection Diagram of the Scanner Unit NKE-2254 ....................................... 7-15 7.4.2. Internal Connection Diagram of the Scanner Unit NKE-2103 ....................................... 7-16 7.4.3. Internal Connection Diagram of the Processor Unit NDC-1460 .................................... 7-17

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Chapter 1 Equipment Overview�

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1.1. Overview

This equipment is marine radar equipment satisfying the IMO standard. The radar

equipment consists of a scanner unit that generates transmitting signals, transmits and receives radio waves, and amplifies receiving signals, and a display system that displays radar images after removing unwanted radio wave from the radar signals.

The radar equipment with which a magnetron tube is used as the transmitting tube transmits 9.4 GHz (X band) pulse-modulated waves.

In addition to the basic radar functions, the radar equipment has functions for safe navigation such as a radar trail display function, target tracking function*1, and AIS information display function*1. *1 The function is optional for radar equipment (not an IMO radar) which is designed for

fishing boats.

1.2. Scanner Unit

The scanner unit is an antenna that transmits a radar

signal into space, and sends the radar signal reflected from a target into the equipment. The horizontal antenna beam width is small for identifying the target bearing, and

the scanner unit has a rotating mechanism for detection in the entire surrounding area.

Two types of scanner units are provided for this equipment, and their usage is as follows: � X band (10 kW) scanner unit: Compact and light

weight X band (25 kW) scanner unit: High resolution, and high sensitivity

Figure 1.2 X-25 kW scanner unit

Figure 1.1 X-10kW scanner unit

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1.3. Display System

The display system processes a radar signal transmitted from the scanner unit, removes

unwanted radio wave, and plots/displays radar images in a specified observation range. The user is to stand in front of the display system and observe the conditions around the own ship with the radar images displayed on the display unit by operating the switches and trackball on the operation unit.

The display system consists of the following three units:

1.4. Principal Functions

This radar equipment satisfies the performance requirements defined in the IMO

standard MSC.192 (79) and has the following functions: � Sensitivity adjustment, and sea clutter and rain/snow clutter suppression Interference rejecter Navigation tools (cursor, VRM, EBL, and parallel cursor) � Own track display � User map creation and display Radar trail display � Target tracking*1 � AIS information display*1 � Self-diagnostic function � Radar performance monitoring (Performance Monitor)*1

*1 The function is optional for radar equipment (not an IMO radar) which is designed for fishing boats.

Figure 1.4 Display unit (NWZ-164)

Operation unit (NCE-7699A)

Figure 1.3 Processor unit (NDC-1460)

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Chapter 2 Equipment Overview�

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2.1. Configuration

2.1.1. Scanners and Transmitted Output Powers IMO compliance

MODEL

NUMBER SCANNER

TRANSMITTED

OUTPUT POWER BAND

RATE OF

ROTATION CATEGORY

JMA-5212-4 4 FT SLOT ANTENNA 10kW X 27rpm CAT 2




* Type of transmitted radio wave: P0N for all the models Non IMO compliance

MODEL

NUMBER SCANNER

TRANSMITTED

OUTPUT POWER BAND

RATE OF

ROTATION

JMA-5212-4 4 FT SLOT ANTENNA 10kW X 27rpm




JMA-5212-4HS 4 FT SLOT ANTENNA 10kW X 48rpm

JMA-5212-6HS 6 FT SLOT ANTENNA 10kW X 48rpm

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2.1.2. Radar Configuration and Ship's Mains IMO compliance

MODEL

NUMBER SCANNER

PERFORMANCE

MONITOR UNIT

DISPLAY

SYSTEM SHIP'S MAINS

JMA-5212-4 NKE-2103-4 NJU-85 NCD-4380 DC24V




Non IMO compliance

MODEL

NUMBER SCANNER

PERFORMANCE

MONITOR UNIT

DISPLAY

SYSTEM SHIP'S MAINS





JMA-5212-4HS NKE-2103-4HS NJU-85 NCD-4380 DC24V

JMA-5212-6HS NKE-2103-6HS NJU-85 NCD-4380 DC24V

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(Notes) � A deicing mechanism (neck heater) is optional. "D" is suffixed to the model number

of a scanner unit with a deicing mechanism. Keep in mind that only power supply of 100-115 VAC, 50/60 Hz and single phase is applicable to the neck heater and that a deicing mechanism cannot be installed in the NKE-2103.

A scanner unit and display system are indicated on the nameplate of the equipment

as follows: SCANNER UNIT DISPLAY UNIT

The display system has a separate structure consisting of the following: Display unit NWZ-164 Control unit NCM-866-E

The control unit NCM-866-E (IMO compliance) consists of the following: Processor unit NDC-1460 Operation unit NCE-7699A

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2.2. Power System Diagram

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Figure 2.1 Power System Diagram

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Figure 2.1 shows the power system diagram of this equipment. DC power passes through the circuit breaker via the line filter in the power circuit

CBD-1702A, and it is re-input to the power circuit CBD-1702A for generating the supply voltage to be used inside the equipment. The power circuits are of the high-efficiency switching type.

This equipment has an overvoltage protection function. If the input voltage exceeds

about 42 VDC, the power circuit CBD-1702A stops the output of the supply voltage to be used inside the equipment; if the input voltage exceeds 50 VDC, it turns off the circuit breaker, thus protecting the equipment from an overvoltage. The protective voltage is set with the constant in the power circuit CBD-1702A.

The P+12V power supply is active even when the power switch on the operation unit is

turned off. This power supply is used with circuits such as the control circuits in the power circuits.

When the power switch on the operation unit is turned on, the power supply to be used

inside the equipment is started, and the +5V, +3.3V, +12V, and -12V power supplies are output for starting the equipment. The +5V and +3.3V power supplies are used mainly with the ICs of control circuits. The +12V and -12V power supplies are used mainly with external interface circuits.

The power output relay for the scanner unit operates in conjunction with the power switch

on the operation unit. An overcurrent protection function is provided for each power output. If a load is

short-circuited or exceeds the rating, the protection function works to turn off the output.

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2.3. Functional System Diagram

2.3.1. Scanner Unit

SLOT ANTENNA

MOTORB101

SAFETY SWITCHS101

MAGV101

PULSETRANS

SWITCHINGCIRCUIT

PC201

MHGENERATOR

AVR

PC1001

�A,�B,�Z

FILTER

DUMMYLOAD

DC+24V

Serial Com, BP, BZ, VD, TRIG

NKE-2254 Scanner Unit

POWER SUPPLYCIRCUIT

MOTOR CONTROLPOWERPC1501

Rotation Control

Speed control

Status

DC+24V

Tx Trigger/Pulse Width

DC+24V

ENCODERROTARYJOINT

INTERFACE CIRCUITPC1101

RF AMP

IF AMP

VIDEO AMP

RECEIVER

Receiver BandwidthControl

Tune Control

DIODELIMITER

Figure 2.2 Functional System Diagram of NKE-2254 Scanner Unit

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Figure 2.2 shows the functional system diagram of the scanner unit for this equipment. When the power relay for the scanner unit in the display system is turned on and power is

supplied to the scanner unit, the power circuit starts power supply to each circuit of the scanner unit. The CPU in the interface circuit is started by starting the power supply, and preheating of the magnetron is started after initialization. The scanner unit waits for a communication signal from the display system. A communication link is established when a communication signal is received, and then the scanner unit is placed under control of the display system.

While the magnetron is being preheated, the interface circuit sets the operation of each

circuit of the scanner unit according to the initial setting value transmitted by the display system. After completion of preheating, the scanner unit informs the display system that the preheating is complete. When the operator performs operation to start transmission, a transmission start command is sent through the communication line from the display system, and the scanner unit starts the scanner motor and the transmission.

A transmission timing pulse is generated in the interface circuit and input to the modulator

switching circuit. After high-voltage switching for the modulator, the high-voltage pulse is further boosted by the pulse transformer and applied to the magnetron for obtaining pulse-modulated microwave. The radar-signal pulse width and repetition frequency are specified by a control command from the display system.

The radar signal passes through the duplexer circuit configured with the circulator and

the rotary joint and transmitted into space from the antenna. A signal reflected from a target is input through the antenna, and then input to the

receiving block by the duplexer function. After the received signal is amplified, it is converted to IF frequency and log-detected, and turns into a radar video signal. If the receiving tuning function is in automatic mode, the interface circuit processes the received signal and automatically controls the tuning voltage to obtain optimum local frequency.

The motor power circuit controlled by the interface circuit is turned on, DC power is

supplied to the motor driver circuit, and the motor starts running. The rotation control signal output by the interface circuit is supplied to the motor driver circuit after frequency-voltage conversion in the motor power circuit, by which the motor speed is controlled. When the safety switch is turned off, power supply to the motor driver is forcibly turned off, by which the motor is stopped. The radiation bearing of scanner beam is detected by the encoder.

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The received radar video signal, transmission timing signal, and antenna rotation signal are sent to the display system. The radar video signal is a non-processed, log-compressed signal. The antenna rotation signal is an incremental signal, and 2048 rotation pulses and reference bearing pulses per cycle are used.

When a specified time has passed during the stopping of the communication signal from

the display system, the interface circuit moves into the protection mode, and forcibly stops the transmission and the scanner unit.

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2.3.2. Display System

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Figure 2.3 Functional System Diagram of the Display System

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Figure 2.3 shows the functional system diagram of the display system for this equipment.

A. Start of the equipment

When the power switch on the operation unit is turned on, the power circuit CBD-1702A is started, and generated voltages are supplied to the radar processing circuit CDC-1350. Then, the CPU in each control circuit starts up and performs initialization.

When the power is turned on, the local CPU and the CPU in the AIS processing circuit CDC-1353, and the CPU in the operation circuit CCK-979 are released from the reset state, and they initialize the hardware connected to them and wait for a control command from the main CPU in the radar processing circuit CDC-1350.

When the main CPU is released from the reset state, it initializes the whole system after the radar plotting/display function. The main CPU sends an initialization command to the local CPU so as to initialize the radar signal setting, and at the same time it sends a communication initialization command to the CPU in the operation unit so as to initialize the operation function. The main CPU also starts the DSP by writing programs into memory in the DSP of the ARPA processing circuit, and issues an initialization command to the CPU in the AIS processing unit so as to initialize the AIS processing circuit.

After that, the main CPU sets the internal condition according to sensor data which is

input through the communication lines of NSK unit, GPS, etc., and it issues an initialization command to the scanner unit via the communication line so as to initialize the scanner. System initialization is complete when the scanner has been initialized. B. Functions of the circuits

The NSK unit NCT-4106A (option) processes gyro signals of synchro or step type, calculates true bearing values, and periodically transmits true bearing data to the radar processing circuit through serial communication. As long as gyro signals are supplied, power is supplied to the NSK unit even when the display system is turned off, and the CPU is active. Thus, the NSK unit can continue to calculate true bearing values even when the display system is turned off.

The CPU in the operation circuit detects the operating conditions of switches and dials on the operation panel, and transmits the operation data to the main CPU through the communication line.

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After converting radar signals (radar video signal, transmission timing signal, and

antenna rotation signal which are sent from the scanner) to digital data, the radar signal processing circuit in the radar processing circuit suppresses unwanted waves, and plots and displays radar images in accordance with the display screen.

The ARPA processing circuit receives radar signal data for which unwanted waves are suppressed by the radar processing circuit, and performs target tracking. The results of target tracking are sent to the main CPU in the radar processing circuit.

The AIS processing circuit processes AIS communication data which is externally input, manages the databases of all the received AIS targets, and transmits important target information to the main CPU. On the basis of the target information, the main CPU displays AIS targets and necessary information on the radar display.

The display unit displays the display signals on the LCD panel that are output by the radar processing circuit. The brightness of screen display can be adjusted by the brilliance control on the display unit. C. Basic radar operation

When preheating of the magnetron in the scanner is finished, the display system enters the standby state. Pressing TX/STBY on the operation unit places the equipment in the transmission state. The main CPU issues a transmission start command to the scanner unit, and the scanner unit starts transmission and rotation.

Radar signals transmitted by the scanner are input to the radar processing circuit via the

power circuit, unwanted waves are suppressed, and radar images are plotted and displayed in accordance with the display screen.

The main CPU can process signals in the radar processing circuit or change the screen

display setting according to the operation of switches and dials on the operation unit. The results are reflected immediately to the radar image display.

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2.4. Input/Output Specifications

This section explains the signals to be connected to connectors in the power circuit CBD-1702A. 2.4.1. SCANNER (J2) SCANNER (J2) is used for connection with the scanner unit.

PIN NAME DESCRIPTION APPLICATION

1 MOTOR-

2 MOTOR-

3 TRX-

4 MOTOR+

5 MOTOR+

6 TRX+

7 GND

8 +12V

9 MTR- RS485

10 MTR+ RS485

11 BZE

12 BZ 470ohm pull-up

13 BPE

14 BP 470ohm pull-up

15 TRGE

16 TRG 180ohm input

17 VDE

18 VD 50ohm input

TXRX

2-13� � � � � � � � � � �

2.4.2. GPS (J3) GPS (J3) is used for connection with the GPS.


1 +12V Used for direct connection with a

JRC GPS receiver

2 GND Same as above

3 NAVCOM Data return

4 NAVRX Data input

5 NAVTX Used for direct connection with a

JRC GPS receiver

GPS

2.4.3. GYRO/COMPASS (J5) GYRO/COMPASS (J5) is connected when a bearing signal is input to the radar.


1 NSKTX- Signal (+) transmitted to the NSK

2 NSKTX+ Signal (-) transmitted to the NSK

3 NSKRX+

Signal (+) received from the NSK,

GPS compass, or another bearing

sensor (NMEA)

4 NSKRX-

Signal (-) received from the NSK,

GPS compass, or another bearing

sensor (NMEA)

5 GND Power GND for the NSK

6 ALM+ Dry contact output 1 External-buzzer

connection

7 ALM- Dry contact output 2 External-buzzer

connection

8 +5V Power supply (+5 V) for the NSK

2-14� � � � � � � � � � �

2.4.4. AIS/NMEA (J6) AIS/NMEA (J6) is used for connection with the AIS or external navigator. *) If the AIS is connected, other NMEA equipment cannot be connected.


1 NMEA RXD+ Signal (+) received from external

equipment

2 NMEA RXD- Signal (-) received from external

equipment

3 NMEA TXD+ Signal (+) transmitted to the AIS

4 NMEA TXD- Signal (-) transmitted to the AIS

5 GND GND

6 EVENT+ Dry contact input 1 Own ship's position

mark

7 EVENT- Dry contact input 2 Own ship's position

mark

2-15� � � � � � � � � � �

2.5. DIP-SW/Jumper Setting

2.5.1. Power Circuit CBD-1702A Jumper setting A jumper post is installed at the location indicated in the figure at right. If an external buzzer is connected to the pin J5-6/7, use the jumper TB1J to determine whether to open or close the buzzer contact in accordance with the status of use under normal conditions. Normally open contact when the pins 1-2 are jumpered (factory setting) Normally closed contact when the pins 2-3 are jumpered If the AIS is connected, connect the jumper TB3J between the pins 2 and 3 (DIRECT).

CBD-1702A TB1J(1-2) jumpered

2-16� � � � � � � � � � �

To make a connection with the PC plotter and RS232C, connect the jumper TB4J to RS232C as shown in the picture below.

Connect the jumper TB4J on the RS232C side.

2-17� � � � � � � � � � �

2.5.2. GYRO I/F Circuit CMJ-304E DIP-SW/jumper setting

(1) TB100: Not to be used. Leave the factory setting as is. (2) TB105: Availability of setting if input voltage for the gyro is low

1-2: Ordinary setting (factory setting) 2-3: Setting when voltage for the gyro is low (CD56 is lighted when the voltage is 22 VDC or less. Even when the display system is turned off, the JMA-5200mk2 operates receiving power from the display system side. Thus, the switching of TB105 setting is not necessary. (This switching does not cause any problem.) The JMA-5200MK2 needs the switching of TB105 setting.)

(3) TB106 and TB107: Not installed (4) TB108 and TB109: Not installed

(5) TB401-TB403: Availability of setting if input voltage for the gyro is low

1-2: Ordinary operation

2-18� � � � � � � � � � �

(6) S4 and S5: Gyro setting and log setting S5 SETTING TABLE 1 2 3 4 5 6 7 8

STEP ON

SYNC OFF

360X OFF OFF

180X ON OFF

90X OFF ON

36X ON ON

DIRECTION NOR OFF

GY

RO

SIG

NA

L

REV ON

PULSE OFF TYPE

SYNC ON

Don't care OFF

800P�360X OFF OFF

400P�180X ON OFF

200P�90X OFF ON

LOG

SIG

NA

L

PULSE/NM

100P�30X ON ON

S4 SETTING TABLE 1 2 3 4 5 6 7 8

ON LOG ALARM

OFF

ON GYRO SIMULATOR

OFF

ON LOG SIMULATOR

OFF

N.C. Don't care any

5s ON GYRO ALARM TIME

0.5s OFF

NMEA(HDT/THS) ON HEADING SENSOR

SOURCE GYRO SIGNAL OFF

4800 OFF OFF

9600 ON OFF

19200 OFF ON

OTH

ER

SE

TTIN

G

NMEA BAUDRATE

SETTING

38400 ON ON

2-19� � � � � � � � � � �

(7) S6: Rest switch Resets the CPU.

(8) S7: Zero-degree setting switch Sets, as the due north, the bearing at the point of pressing.

(9) S2 and S3: Selection of a gyro type Left: Step Right: Synchro

(10) S1: Gyro ON-OFF switch Left: OFF Right: ON

(11) S10: Other settings are not to be used. Set all to OFF. LED

2-20� � � � � � � � � � �

2.5.3. Radar Processing Circuit CDC-1350 (1) S300: 6-bit DIP-SW. All the bits are

factory-set to OFF. Do not change any of the factory settings.

1: OFF (Do not change this setting.) 2: OFF (Do not change this setting.) 3: OFF (Do not change this setting.) 4: OFF (Do not change this setting.) 5: OFF (Do not change this setting.) 6: OFF (Do not change this setting.)

(2) S301: 4-bit DIP-SW. Do not change any

of the factory settings below. 1: ON (Do not change this setting.) 2: ON (Do not change this setting.) 3: OFF (Do not change this setting.) 4: OFF (Do not change this setting.)

2.5.4. AIS Processing Circuit CDC-1353 Connect the jumpers as shown in the picture.

S301

S300

2-21� � � � � � � � � � �

2.5.5. T/R Control Circuit CMC-1205R [Type of DIP switch] [Type of jumper pin]

• SW1 and SW2 • J92, J93, J95, and J96 � NKE-2254 (2 units: 25 kW, X-band) • Jumper pin setting • DIP switch setting (�: Switch)

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

�� 3 2 1

SW1

1� 2

ON SW2

1� 2 3 4 5 6 7

ON Jumper pins

2-22� � � � � � � � � � �

� � � � � � � � � � �

Chapter 3

Service Parts

� � � � � � � � � � �

3-1� � � � � � � � � � �

3.1. Service Parts Lists for the Units

3.1.1. Spare Parts 7ZXRD0026 (JMA-5212-4/6/4HS/6HS)

Name Type/Code Shape (mm) In Use Spare Parts No. Location

Fuse ST4-5AN1 (5ZFCA00050)

1 3 F2 Inside processing unit



7ZXRD0015 (JMA-5222-7/9)

Name Type/Code Shape (mm) In Use Spare Parts No. Location





31.8�6.35

31.8�6.35

31.8�6.35

31.8�6.35

3-2� � � � � � � � � � �

3.1.2. Special Parts � NKE-2103 (JMA-5212-4/6/4HS/6HS)

Parts No. Name Type Manufacturer Location Code

V101 Magnetron MAF1565N NJRC Scanner unit 5VHAA00102

A101/A102 Circulator FCX68R Orient Microwave

Scanner unit 5AJIX00027

A103 Dummy NJC4002 NJRC Scanner unit 5ANDF00001

A104 Filter NJC9952 NJRC Scanner unit 5AWAX00002

A301 Diode limiter NJS6930 NJRC Scanner unit 5ATBT00006

NKE-2254 (JMA-5222-7/9)

Parts No. Name Type Manufacturer Location Code

V1 Magnetron M1568BS NJRC Scanner unit 5VMAA00106

A101/A102 Circulator NJC3901M NJRC Scanner unit 5AJBV00007

A103 Dummy NJC4002 NJRC Scanner unit 5ANDF00001

A104 Filter NJC9952 NJRC Scanner unit 5AWAX00002

A301 Diode limiter NJS6930 NJRC Scanner unit 5ATBT00006

3.1.3. NKE-2103 (JMA-5212-4/6/4HS/6HS)

Location Circuit Block Type Remarks Scanner unit Motor with gear 7BDRD0048 DC brushless motor Scanner unit Modulation circuit CME-363 Magnetron not included Scanner unit Receiver NRG-610 CAE-529-1 included Scanner unit Power circuit CBD-1783 Scanner unit Encoder CHT-71A Scanner unit Motor control power circuit CBD-1779 Scanner unit Fan 7BFRD0002 Scanner unit Performance monitor NJU-85

3-3� � � � � � � � � � �

3.1.4. NKE-2254 (JMA-5222-7/9)

Location Circuit Block Type Remarks

Scanner unit Motor with gear 7BDRD0044A DC brushless motor (ordinary speed)

Scanner unit Motor with gear 7BDRD0045A DC brushless motor (high speed)

Scanner unit Modulator NMA-550

CPA-264 included CMB-404 included CRF-229 included Magnetron not included

Scanner unit Modulation circuit CPA-264 Scanner unit Receiver NRG-162A CMA-866A included Scanner unit Power circuit CBD-1682A Scanner unit Encoder CHT-71A Scanner unit T/R control circuit CMC-1205R

Scanner unit Motor control power circuit CBD-1779

Scanner unit Heater control circuit CHG-216 Optional (100 VAC) Scanner unit Fan 7BFRD0002 Scanner unit Performance monitor NJU-85

3.1.5. NCD-4380

Location Circuit Block Type Remarks

Processor unit Radar processing circuit CDC-1350

Processor unit Ordinary target tracking circuit NCA-877A Optional

Processor unit AIS processing circuit NQA-2155 Optional Processor unit Power circuit NBD-866A Operation unit Operation circuit CCK-979 Operation unit PS2 connector circuit CQC-1204 Operation unit Trackball CCK-1000 Display unit Brilliance control circuit CCK-970

3-4� � � � � � � � � � �

3.2. Exploded Diagrams

3.2.1. NKE-2103 NO� �� PRODUCT CODE SERVICE CODE NOTE

1 Radiator Assy. MDNAX5041 NAX-16B-6 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 ��309256A � �

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 H-7BDRD00048 7BDRD00048 CBP-202

7 Wave Guide Unit MPAB31564 � �

7-1 Wave Guide MTM301722A � �

7-2 Flange MTM301843 � �

7-3 Push Plate MTB366792A � �

7-4 Bolts BRTG08900 � M4X25 SUS SW W

8 Encoder Assy. MPEM30205 � �

8-1 Encoder 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 � �

3-5� � � � � � � � � � �

9-4 Packing MTT305919A

9-5 Swich Cover MPPK00925A � �

9-6 Cable Push Plate MTB366112 � �

9-7 Cable Clamp BRBP00009 � �

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 Recever Unit MDNRG5093 NRG-610 NRG-610

10-2-3 Diord Limiter 5ATBT00006 � NJS6930

10-2-4 Circulator 5AJIX00027 � FCX68R

10-2-5 Filter 5AWAX00002 � NJC-9952

10-2-6 Guide Plate MT�326122 � �

10-2-7 Dummy Load 5ANDF00001 � NJC4002

10-2-8 Spacer MTL318403 � �

10-2-9 MG-PIN MTL325492 � �

10-2-10 - � � �

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 MPBX44290 CME-363 �

10-4 Power Supply Unit MPBX44291 CBD-1783 �

10-5 Motor Control PC MDBW10832 CBD-1779 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 � �

10-13 Cross-recessed Head Screw BSNB04012B � NB4X12Bs




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 � �

3-6� � � � � � � � � � �

22 Washers BRTG00883

23 - � � �

24 - � � �

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

34 Cross-recessed Head Screw BSNB04012B � NB4X12Bs



3-7� � � � � � � � � � �

Figure 3.1 Exploded Diagram of the NKE-2103

3-8� � � � � � � � � � �

3.2.2. NKE-2254

No. PART NAME PRODUCT CODE SERVICE CODE NOTE

1 Radiator Assy. � NAX-16B 9ft/7ft/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 � �

3-8 Cover MTB389970 � �

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

5-9 Retaining Ring-C Type BRTG06164 � �

5-10 Roling Bearing Washer BRTG07261 � AW10X ID50

5-11 O-Ring BRPK05043 � G155

5-12 Roling 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 � �

3-9� � � � � � � � � � �

12 Wave Guide MPAB31207A � �

13 Encoder Assy. MPEM30202 � �

13-1 Encoder MDMW11068 CHT-71A CHT-71

13-2 Spur Gear MTT006909B � �

13-3 Click MTD001842 � �

13-4 Plate Encoder Mounting MTB366793A � �

13-5 Upset Bolt BRTG06852 � M4X12 SW W SUS304

14 Motor Assy. - � �

14-1 Motor MPEM30204 7BDRD0044A CBP-168A

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 Clump Gland Assy.(A25) MPJD30063A � �

16-1 Clump Gland MPTG31573A � �

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 � �

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

21-2 Main Chassis MPBX44445 � �

21-3 Cover Assy.(L) MPBX44446 � �

21-4 Cover Assy.�S� MPBX44447 � �

21-5 Modulator PC MDLW11930 CPA-264(MDLW11927) CPA-264

21-6 Magnetoron - 5VMAA00106 �

21-7 Pulse Transformer - � �

21-8 Flame MPBC43040 � �

21-9 Holding Plate MTB389330 � �

21-10 Circulator - � �

21-11 Diord 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. MDNRG5094A NRG-162A NRG-162A

3-10� � � � � � � � � � �

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-216P)

24-1 Neck Heator Unit - � �

24-2 Plate Clamp MTB374149 � �

24-3 Plate Clamp MTB374150 � �

24-4 Terminal Board for heater - � �

25 Cross-recessed Head Screw BSNC04010B � M4X10 SW LW

26 Cross-recessed Head Screw BSNC04016B � M4X16 SW LW

3-11� � � � � � � � � � �

Figure 3.2 Exploded Diagram of the NKE-2254

3-12� � � � � � � � � � �

3.2.3. NDC-1460

PARTS LIST RADAR PROCESS UNIT NDC-1460/JMA-5200MK2

Fig. No.

No. DESCRIPTION DRAWING No.

JRC CODE NOTE

1 Nameplate MPNN45149

2 Warning Label MPNN43252

3 Drip-proof Rubber MPPK30497A

4 Coaching Clip CS-4U BRBP05299 SHINAGAWA-SHOKO

5 Spacer BSB-308E BRBP06402 HIROSUGI

6 Bracket MTB382448

7 D-sub Cover MTB381018

8 Label MPNN40470

9 Panel MPBC40313

10 Chassis MPBX44552

11 Nylon Rivet FNRP 3x4.5 Black BRTG01052 KOYO-FASTENER

12 Power Supply Circuit CBD-1702A

13 Bracket1 (Connector) MTB382462

14 Bracket2 (Connector) MTB382463

15 Fiber Washer 3.2X6X0.5 White BRTG04252 KOSHIN

16 Spacer (L) MTL323365

17 Nut NO.4-40UNC Bs BNM2 BRTG09065 KOSHIN

18 Spacer (S) MTL323366

19 Heat sink MTC301546

20 Panel MPNN43566

21 Fuse

22 Radiator Sheet MTT308591

23 Connector

24 Rubber Washer MTT311607

25 Sems Screw NC3X12SUS BRTG03547 KOSHIN

26 Rubber Washer MTT311609

27 Gasket 1 MTT308585

28 Gasket 2 MTT308586

29 Label MPNN42981

30 Radar processing circuit CDC-1350

31 AIS Process Unit NQA-2155 Option

32 Plotter Control Unit NDB-34A Option

33 ATA Process Unit NCA-877A Option

34 Breaker SANKEN

35 Guard Handle THA-212-3 BRHD05338 TOCHIGIYA

36 Cover MTB381021

37 Sems Screw NB3X8Bs BSNB03008B

38 Spring Washer SW3 BSSW03000S

39 Washer LW3Bs BSLW03000W

MTZ303979 -1/1

40 Pan Head Machine Screw NK4X25Bs BSNK04025B

3-13� � � � � � � � � � �

41 Wing Nut BN4 BSBN04000B

42 Washer W4Bs BSFW04000B

43 Spring Washer SW4 BSSW04000S

44 Nut N4Bs BSHN04000W

45 Nut LN4Bs BSLN04000W

46 Sems Screw NC3X8Bs BSNC03008B

47 Sems Screw NC2.6X10Bs BSNC02610B

48 Sems Screw NB3X6Bs BSNB03006B

49 LAN I/F Process Unit CMH-2224

MTZ303979 -1/1

50 Mounting Plate MPBC43241

1 Panel MTV303808

2 Cover MTV303809

3 Rubber Key MTV304379A

4 Packing MTV303811

5 16 Knob MPHD30383

6 38 Knob MPHD30378

7 Packing (for speaker) MTZ301931

8 Packing (for vibrationproof) MTT306943

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 KITAGAWA-IND

18 Rubber Washer MTT301458A

19 PT Screw 1411-H2-3010C BRTG09222 JAPAN DRIVE-IT

20 PT Screw 1411-H2-3008 BRTG09223 JAPAN DRIVE-IT

21 Waterproof Sheet BRPK05061 NITTO DENKO

22 Cable


24

MTZ303980 -1/1

25

1 Bezel MTV304395

2 Cover MTV302382

3 Rubber Key 1 (Japanese) MTV303868



6 Switch Installation Board MTB388670

7 Speaker Installation Board MTB388671

8 Spacer MTB371784

9 Trackball Cover MTV304432

10 Trackball

11 Cover MTV303694

12 Trackball Installation Board MTB388672

MTZ303981 -1/1

13 Teflon Ring MTT308975

3-14� � � � � � � � � � �

14 Spacer Assy MPBC42659

15 Rear Cover Assy MPBC42660

16 22 Knob MPHD30389

17 48 Knob MPHD30390

18 Stopper Screw BRTG00561 KOSHIN

19 Dripproof Ring MPPK30299

20 Rubber Cap MPNG00102

21 Nameplate (Japanese) MPNM35344

22 Key Sheet (Japanese) MPNM35345

23 Cover � MPNN37100A

24 Gasket for Trackball MTT305538

25 Drip-proof Rubber 1 MTT306119

26 Drip-proof Rubber 2 MTT306120

27 Keyboad Unit CCK-980 UJRC

28 Speaker

29 Power Switch


31 Nylon Clip AB-10N BRBP00012 TYTON


33 Binding Head Screw M4X8FE ZMC Black BRTG08628 KOSHIN


35 Latch TL-304-2 BRTG07339 TOCHIGIYA

36 Sems Screw NC3X8Bs BSNC03008B

37 Sems Screw NC3X12Bs BSNC03012B �

38 Spring Washer SW3 BSSW03000S �

39 Nut N3Bs BSHN03000W

40 Flat-Head Screw S3X12Bs BSSK03012B

41 Washer W3Bs BSFW03000B

42 PS2 I/F CIRCUIT

3-15� � � � � � � � � � �

Figure 3.3 Exploded Diagram of the NDC-1460

Fuse nut

Connector nut

Connector nut

3-16� � � � � � � � � � �

3.2.4. NCE-7699A

No. DESCRIPTION DRAWING No.

JRC� CODE

NOTE

1 Panel � MTV3038082 Cover � MTV303809 �

3 Rubber Key � MTV304379A �

4 Packing � MTV303811 �

5 �16 Knob � MPHD30383 �

6 �38 Knob � MPHD30378 �

7 Packing (for speaker) � MTZ301931 �

8 Packing (for vibrationproof) � MTT306943 �

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 �


18 Rubber Washer � MTT301458A �

19 PT Screw 1411-H2-3010C BRTG09222 JAPAN DRIVE-IT


21 Waterproof Sheet � BRPK05061 NITTO DENKO

22 Cable � � �

3-17� � � � � � � � � � �

Figure 3.4 Exploded Diagram of the NCE-7699A

3-18� � � � � � � � � � �

� � � � � � � � � � �

Chapter 4 Replacement of Major Units

� � � � � � � � � � �

4-1� � � � � � � � � � �

4.1. Scanner Unit

4.1.1. Precautions for replacing parts in the scanner unit

Follow the precautions below to carry out parts replacement without getting injured.

Confirm that all the radar equipment (if more than one unit is used) is turned off before you start the parts replacement. For the sake of safety, turn off the main power circuit breaker.

Wear gloves to protect your hands during parts replacement. Be very careful not to drop a tool or part when you work in high places.

Carry out parts replacement while the ship does not roll or pitch much in a bay if possible.

Be careful that the radiator does not hit anyone during parts replacement. The radiator can turn with wind or the like.

4-2� � � � � � � � � � �

4.1.2. Parts Replacement for the Scanner Unit NKE-2254 [Required tools]

• Tools for removing the cover from the scanner unit A wrench (width across flats 13 mm for M8 bolts)

• Tools used in each part replacement procedure

[Replacement procedure]

(1) Before starting the work, turn off the safety switch at the bottom of the scanner unit.

(2) Loosen the four hexagon bolts, and remove the pedestal cover.

To replace the following parts, remove

the cover from the left (port) side: • Motor • Motor driver circuit

To replace the following parts, remove

the cover from the right (starboard) side: • Transmitter (magnetron, modulation

circuit, or fan for the modulation circuit) • Receiver • T/R control circuit • Power circuit • Encoder

Ship's heading bearing

Set the safety switch to OFF.


Loosen the four hexagon bolts.

4-3� � � � � � � � � � �

(3) Replace the parts, which need replacement, according to the procedures in the subsequent sections.

Be careful not to lose screws or brackets removed during replacement.

(4) After the parts replacement, mount the pedestal cover, set the safety switch to ON. (Be sure to cap the safety switch.)

The packing shall be clean, free from dust and dirt when you mount the cover.

(5) Turn on the radar, and perform necessary operation checks. 4.1.3. Magnetron replacement / NKE-2254 [Required tools]

• A Phillips screwdriver for 4 mm screws


• Tools for removing the scanner unit covers (See Section 4.1.2.)


(1) Remove the covers from the right (starboard) side (see Section 4.1.2) and loosen the screws (four M4 screws) to remove the magnetron cover.

Loosen the four screws.

Magnetron cover

4-4� � � � � � � � � � �

(2) Make sure there is no charge remaining in the modulation high-voltage circuit board, and then remove the screws (two M4 screws) holding the magnetron cables (yellow and green) in place.

(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.

Use a shielded 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. Do not forget to tighten the bolts and screws, and do not forget to reconnect the

cables.

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.

[Operation check]

After having completed the replacement, follow the steps below to check the operation.

(1) Turn on the radar and allow sufficient preheating time (20 - 30 minutes in the STBY mode).

(2) Start transmission on a short pulse range and change the range to the longer ranges. Open the service engineer menu and provisionally adjust the tuning. Whenever operation becomes unstable, immediately return to STBY, wait five to ten minutes, and then transmit again.

Remove the green cable.

Remove the yellow cable.

Magnetron

Remove the four screws.

Remove the two screws.

4-5� � � � � � � � � � �

(3) After transmitting on a long range for about fifteen minutes, return to the service engineer menu and adjust the tuning.

Perform the adjustment in the service engineer menu until the tuning display bar on the display unit reaches the eighth calibration mark.

With the service engineer menu open, also make sure the magnetron current is shown between the fifth and seventh calibration markings.

4.1.4. Motor replacement / NKE-2254 [Required tools]

• Single-ended wrench (width across flats 17 mm for M8 bolts)

• Tools for removing the scanner unit covers (See Section 4.1.2) [Replacement procedure]

(1) Remove the cover from the left (port) side (see Section 4.1.2), and disconnect the cables that are connected to the motor driver circuit from the motor.

(2) Remove the four hexagon bolts (M8),

and remove the motor.

Remove the four bolts. Disconnect the two

cables.

Motor

Motor driver circuit

4-6� � � � � � � � � � �

(3) Remove the four hexagon bolts (M8), and detach the mounting plate from the motor.

(4) Attach the mounting plate to the new

motor. Be sure to tighten all the four hexagon bolts with specified torque (210 kgf�cm).

(5) Install the motor in the scanner unit.

Press the motor against the protrusions on the arms extending from the chassis, and secure the motor after adjustment to minimize motor backlash.

Be sure to tighten all the four hexagon bolts with specified torque (140 kgf�cm).

(6) Apply grease to the gear after installing the motor.

(7) After the motor replacement, carry out the work in reverse order of removal.

Be sure to tighten all the bolts and screws and connect all the cables.

[Operation check]

After completing the replacement work, check the operation by following the procedure below.

(1)�� Turn on the radar, transmit radar signals when the countdown is finished, and

check that radar images are displayed normally. There shall be no abnormal noise emitted when the motor starts running, when it is running, or when it stops.�

Motor

Remove the four bolts.

Mounting plate

Tighten the four bolts.

Protrusions from the arm

Press

Apply grease.

4-7� � � � � � � � � � �

4.1.5. Motor drive circuit board replacement / NKE-2254 [Required tools]

• A Phillips screwdriver for 4 mm screws �

• Tools for removing the scanner unit covers (See Section 4.1.2.) [Replacement procedure]

(1) Remove the cover from the left (port) side (see Section 4.1.2), disconnect the cables and remove the three screws (M4) from the motor driver circuit, and then detach the plate on which the motor driver circuit is mounted.

(2) Disconnect the cables from the motor

driver circuit, remove the four screws (M4), and replace the motor driver circuit.

(3) After the driver circuit replacement, carry out the work in reverse order of removal. Be sure to tighten all the bolts and screws and connect all the cables.

Remove the three screws.

Remove the eight screws.

4-8� � � � � � � � � � �

[Operation check] After completing the replacement work, check the operation by following the

procedure below.

(1)��Turn on the radar, transmit radar signals when the countdown is finished, and check that radar images are displayed normally. There shall be no abnormal noise emitted when the motor starts running, when it is running, or when it stops.�

4.1.6. Modulator circuit (CPA-264) replacement / NKE-2254 [Required tools]

• A Phillips screwdriver for 4 mm screws�


• Single-ended wrench (width across flats 7 mm for M4 bolts)�



(1) Remove the cover on the right (starboard) side (see Section 4.1.2), 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.


4-9� � � � � � � � � � �

(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.

(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.

If reusing the heat radiation plate on the modulator, be sure to install the thermal insulation sheet between the TR5-8 and the heat radiation plate so that it is straight.

(4) After having replaced the modulator circuit

board, reassemble the unit following the disassembly procedure in the reverse order.

Do not forget to tighten the bolts and screws, and do not forget to reconnect the cables.

[Operation check]

After having completed the replacement, follow the procedure below to check the operation.

(1) Turn on the radar and emit radar waves once the countdown is finished, and check that the radar image is correctly displayed.

Transmit radar signals on a long range and with the service engineer menu open, also make sure the magnetron current is shown between the fifth and seventh calibration markings.�

Remove the five screws.


Remove the spacer.

Loosen the nine screws.


4-10� � � � � � � � � � �

4.1.7. Power supply circuit board (CBD-1682A) replacement / NKE-2254 [Required tools]





(2) Remove the cables connected to the 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 screws

4-11� � � � � � � � � � �

(3) Remove the screws (six M4 screws) holding the power supply circuit board in place and replace the power supply circuit board.

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) After having replaced the power supply circuit board, reassemble the unit following

the disassembly procedure in the reverse order. Do not forget to tighten the bolts and screws, and do not forget to reconnect the

cables. [Operation check]


(1) Turn on the radar and emit radar waves once the countdown is finished, and

check that the radar image is correctly displayed. 4.1.8. T/R control circuit (CMC-1205R) replacement / NKE-2254 [Required tools]




(1) Before beginning the replacement procedure, open the service engineer menu of the radar display unit and back up the scanner unit data (transmission time and motor rotation time).

If you do not back up this data, it will not be possible to maintain continuity in scanner data such as the magnetron usage time.

Remove the six screws.

4-12� � � � � � � � � � �

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

side (see Section 4.1.2), 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.

(3) Remove the cables connected to the T/R

control circuit board and the screws (seven M4 screws) and replace the T/R control circuit board.

Set the DIP switch and jumper pins of the T/R control circuit board to suite the NKE-2254 (see Section 2.5.5).

(4) After having replaced the T/R control

circuit board, reassemble the unit following the disassembly procedure in the reverse order.




Remove the seven screws.

4-13� � � � � � � � � � �

[Operation check] After having completed the replacement, follow the procedure below to check the operation.

(1) Turn on the radar, open the service engineer menu, restore the scanner unit times,

and make sure that the data has been correctly continued before/after the T/R control circuit board replacement (check the transmission time and the motor rotation time).�

�

(2)�� Begin transmission once the countdown is complete and check that the radar image is correctly displayed.�

4.1.9. Receiver (NRG-162A) replacement / NKE-2254 [Required tools]



• Tools for removing the scanner unit covers (See Section 4.1.2)




4-14� � � � � � � � � � �

(2) Remove the screws (five M4 screws) holding the receiver in place and remove the cables connected to the receiver, then replace the receiver.

(3) Transfer the metal fitting from the removed receiver to the replacement receiver and fit the receiver into the casing.

After having replaced the receiver, reassemble the unit by following the disassembly procedure in the reverse order. Do not forget to tighten the bolts and screws, and do not forget to reconnect the cables.

[Operation check]



check that the radar image is correctly displayed. Transmit radar signals on a long range and open the service engineer menu to adjust the tuning. Perform the adjustment in the service engineer menu until the tuning display bar on the display unit reaches the eighth calibration mark.

Remove the five screws.

Remove the cable.

4-15� � � � � � � � � � �

4.1.10. Encoder replacement / NKE-2254 [Required tools]



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

• A wrench (width across flats 8 mm for M6 bolts)



(2) Loosen the screws (two M4 screws) and remove the encoder together with the metal fitting.

�

�

�

�

�



Encoder Metal fitting

Loosen the two screws.

4-16� � � � � � � � � � �

(3) Remove the metal fitting and the gear wheel from the encoder, attach them to the replacement encoder and fit it into the casing.

(4) After having replaced the encoder, reassemble the unit by following the disassembly procedure in the reverse order. Do not forget to tighten the bolts and screws, and do not forget to reconnect the cables.

[Operation check]



check that the radar image is correctly displayed. Open the service engineer menu and adjust the azimuth.

Remove the nut. Metal fitting

Encoder Remove the three screws.

4-17� � � � � � � � � � �

4.1.11. Magnetron fan replacement / NKE-2254 [Required tools]





(2) Remove the cable for the fan that is connected to the T/R control circuit board.



Remove the cable.

4-18� � � � � � � � � � �

(3) Remove the screws (four M4 screws) holding the fan in place and replace the fan.

(4) After having replaced the fan, reassemble

the unit by following the disassembly procedure in the reverse order.


[Operation check]



check that the radar image is correctly displayed. Check that the fan alarm is not triggered.�

4.1.12. Modulator fan replacement / NKE-2254 [Required tools]





4-19� � � � � � � � � � �


(2) Remove the cable for the fan that is connected to the T/R control circuit board.

(3) 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.



Remove the cable.

Loosen the nine screws.


4-20� � � � � � � � � � �

(4) Remove the screws (four M4 screws) holding the fan in place and replace the fan.

(5) After having replaced the fan, reassemble the unit by following the disassembly procedure in the reverse order.


[Operation check]



check that the radar image is correctly displayed. Check that the fan alarm is not triggered.�


4-21� � � � � � � � � � �

4.1.13. NKE-2103 scanner unit parts replacement [Required tools]

• Tools for removing the cover from the scanner unit A wrench (width across flats 13 mm for M8 bolts)

• Tools used in each part replacement procedure


(1) Turn off the safety switch at the bottom of the scanner unit.

(2) Loosen the four hexagon bolts, and open the top cover until the stay bracket stopper works.

Before the top cover can be closed, the stay bracket stopper must be released.

(3) Replace the parts, which need replacement, according to the procedures in the subsequent sections.

Be careful not to lose screws or brackets removed during replacement.

(4) After the parts replacement, close the top cover, set the safety switch to ON. (Be sure to cap the safety switch.)

The packing shall be clean, free from dust and dirt when you close the cover.

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

Set the safety switch to OFF.


Loosen the four hexagon bolts.

Stay bracket

4-22� � � � � � � � � � �

4.1.14. Magnetron Replacement for the NKE-2103 [Required tools]

• A Phillips screwdriver for 4 mm screws • A Phillips screwdriver for 5 mm screws • Tools for removing the scanner unit covers (See Section 4.1.2)

[Replacement procedure] (1) Open the top cover (see Section 4.1.2),

loosen the four screws (M4), remove the transmitter-receiver unit cover, and disconnect the ten cables from the transmitter-receiver unit. The transmitter-receiver unit cover can be removed by sliding it.

(2) Loosen the five bolts (M5), and remove the transmitter-receiver unit. The transmitter- receiver unit can be removed by sliding it upward.

Loosen the four screws.

Slide

Loosen the five bolts.

Slide

4-23� � � � � � � � � � �

(3) Remove the six screws (M4) that secure the magnetron, and replace the magnetron.

A shielded screwdriver shall be used for magnetron replacement. Touching the magnetron with metal (a tool) causes performance deterioration.

(4) Adjust the lead wires (yellow and green) of the new magnetron to an appropriate length, and tighten the screws to secure the cables.

After the magnetron replacement, carry out the work in reverse order of removal. Be sure to tighten all the bolts and screws and connect all the cables.

Be careful that the lead wires (yellow and green) of the magnetron do not touch other parts or the chassis. Bringing the lead wires into contact with them can cause the discharge.

[Operation check]


(1) Turn on the radar, and allow sufficient preheating time (about 20 to 30 minutes in

the STBY state).��

(2) Start transmission in a short pulse range, and gradually change to longer ranges. At this time, open the service engineer menu and perform provisional tuning adjustment.�

If operation becomes unstable in the meantime, immediately change the equipment back into the STBY state, leave it there for 5 to 10 minutes, and restart transmission.�

�

Nut plate Remove the six screws.

Magnetron

Cable: Green

Cable: Yellow

4-24� � � � � � � � � � �

(3) After long range transmission for about 15 minutes, open the service engineer menu again and perform tuning adjustment.�

In the service engineer menu, perform adjustment for the tune indicator bar on the display to reach 80%.�

In the service engineer menu, also confirm that the magnetron current indicator shows 50 to 70%.�

4.1.15. Motor Replacement for the NKE-2103 [Required tools]

• A Phillips screwdriver for 4 mm screws • A Phillips screwdriver for 5 mm screws

• A single-ended wrench (width across flats 10 mm for M6 bolts)�



(1) Open the top cover (see Section 4.1.2), and remove the transmitter-receiver unit (see Section 4.1.6).

(2) Remove the four hexagon bolts (M6),

and remove the motor. Apply grease to the gear of the new motor, and install the motor in the chassis. Be sure to tighten all the four hexagon bolts with specified torque (72 kgf�cm).

(3) After the motor replacement, carry out the work in reverse order of removal. Be sure to tighten all the bolts and screws and connect all the cables.

The rotor of the motor rotates, so clamp the cables not to touch the rotor.

Remove the four bolts.

4-25� � � � � � � � � � �

[Operation check]


(1) Turn on the radar, transmit radar signals when the countdown is finished, and

check that radar images are displayed normally. There shall be no abnormal noise emitted when the motor starts running, when it is running, or when it stops.

4.1.16. Motor Control Power Circuit Replacement for the NKE-2103 [Required tools]





(2) Disconnect the cables from the motor

control power circuit, remove the eight screws (M4) that secure the motor control power circuit, and replace it.

(3) After the replacement of motor control power circuit, carry out the work in reverse order of removal.


Remove the eight screws (M4).

4-26� � � � � � � � � � �

[Operation check] After completing the replacement work, check the operation by following the

procedure below.

(1)�� Turn on the radar, transmit radar signals when the countdown is finished, and check that radar images are displayed normally.

4.1.17. Modulation Circuit (CME-363) Replacement for the NKE-2103 [Required tools]





(2) Disconnect the cables from the

modulation circuit, remove the nine screws (M4) that secure the modulation circuit, and replace it.

If the heat radiation plate of the modulator is used, mount the insulating sheet straight between TR17/TR18 and the heat radiation plate.

(3) After the modulation circuit replacement, carry out the work in reverse order of removal.


Remove the nine screws (M4).

4-27� � � � � � � � � � �

[Operation check]


(1) Turn on the radar, transmit radar signals when the countdown is finished, and

check that radar images are displayed normally.�After long range transmission, open the service engineer menu, and confirm that

the magnetron current indicator shows 50 to 70%.� 4.1.18. Power Circuit (CBD-1783) Replacement for the NKE-2103 [Required tools]







(2) Disconnect the cables and remove the six

screws (M4) from the power circuit, and then remove the power supply unit from the transmitter-receiver unit.

Remove the six screws.

4-28� � � � � � � � � � �

(3) Remove the six M4 screws and two M3 screws, and detach the power circuit from the mounting plate.

(4) After the power circuit replacement, carry out the work in reverse order of removal. Be sure to tighten all the bolts and screws and connect all the cables. If the square radiating sheet attached to the chassis on the back (solder side) of

the power circuit is torn, change to a new one provided with the replacement power circuit.

4.1.19. Receiver (NRG-610) Replacement for the NKE-2103 [Required tools]




(1) Open the top cover (see Section 4.1.2), and remove the transmitter-receiver unit (see Section 4.1.6). After that, remove the magnetron (see Section 4.1.6).

Remove the six screws (M4). Remove the two

screws (M3).

4-29� � � � � � � � � � �

(2) Remove the 3D circuit and receiver from

the transmitter-receiver unit according to the procedure below.

(a) Remove the M4 screw near the

magnetron.

(b) Remove the three screws (M4) from the motor control power circuit, and remove the 3D circuit from the chassis.

(c) Remove the two screws (M4) that secure the 3D circuit, and detach the 3D circuit from the mounting plate.

(d) Remove the four screws (M4) that secure the receiver, and replace it.

Remove the M4 screw.

Remove the two screws (M4).

Remove the four screws (M4).

Motor control power circuit

Remove the three screws (M4).

4-30� � � � � � � � � � �

(3) After the receiver replacement, carry out the work in reverse order of removal.


After receiver replacement, perform the assembly procedure, paying attention to the fitting of the transmitter-receiver unit. If the fitting is poor, loosen the screws and perform the adjustment again.

4.1.20. Encoder Replacement for the NKE-2103 [Required tools]





(2) Remove the two screws (M4) that

secure the encoder, and remove the encoder from the chassis.

Remove the M4 screw.

Loosen the M4 screw.

Encoder

4-31� � � � � � � � � � �

(3) Remove the metal fitting and gear wheel from the old encoder, mount them on the new encoder, and install the encoder in the chassis.

(4) After the encoder replacement, carry out the work in reverse order of removal.


[Operation check]


(1) Turn on the radar, transmit radar signals when the countdown is finished, and check

that radar images are displayed normally. At this time, open the service engineer menu and adjust the bearing.�

Remove the nut. Metal fitting

EncoderRemove the three screws.

4-32� � � � � � � � � � �

4.2. Display System

4.2.1. Brilliance Control Circuit CCK-970 [Notes] Do not directly touch the LCD surface. Do not directly touch the AR filter. To protect the LCD surface and parts, carry out the work on a soft cloth. [Required tools] A Phillips screwdriver for 3 mm screws A hexagonal Allen wrench (1.5 mm) [Removal]

(1) Loosen the slotted-head screw of the control with a hexagonal Allen wrench, and remove the control and rubber bushing. (Hexagonal Allen wrench: 1.5 mm)

(2) Remove the ten screws from the rear, and remove the front panel. (Phillips screwdriver for 3 mm screws)

Remove

4-33� � � � � � � � � � �

(3) Disconnect the cables, remove the two screws, and remove the brilliance control

circuit CCK-970 (TCH-002R). (Phillips screwdriver for 3 mm screws)

[Mounting]

(1) Mount the circuit.

(2) Connect the cables, and mount the front panel.

(3) Mount the rubber bushing on the shaft of the control.

Mounting direction

(4) Insert and secure the control, checking how it turns and if you can feel the reaction (clicking) of the control when pressing it.

[Operation check]

(1) Check that the control turns smoothly. (2) Confirm that you feel the reaction (clicking) of the control when pressing it. (3) After the replacement, start the equipment, and check that images are displayed

normally. (4) Brightness can be controlled in the whole range (from the minimum to maximum) by

turning the brilliance control.

Remove

4-34� � � � � � � � � � �

4.2.2. Power Supply Unit NBD-866A [Note]

Before the power supply unit can be replaced, the power connectors of the processor unit must

be disconnected.

[Required tools]

A Phillips screwdriver for 3 mm screws

[Removal]

(1) Remove the six screws to remove the top cover.

(Phillips screwdriver for 3 mm screws)

(2) Remove the screws from both sides and the bottom of the power supply unit.


� �

Remove Remove

Remove

Remove

4-35� � � � � � � � � � �

(3) Disconnect the connectors from the power circuit, and remove the power supply unit to replace it.

[Mounting]

(1) Mount the new power supply unit in reverse order of removal.

[Operation check]

(1) Check that the equipment starts normally.

(2) Transmit radar signals and check that radar images are displayed normally.

4-36� � � � � � � � � � �

4.2.3. Radar Processing Circuit CDC-1350 [Note]

Save necessary setup data onto a memory card before starting the replacement. Take notes of the

transmission time and operating time of the scanner unit.

[Required tools]

A socket wrench for 5.5 mm bolts


[Removal]

(1) Remove the top cover according to Section 4.2.2.

(2) If ARPA and AIS processing circuits are installed, remove them according to Sections 4.2.5 and

4.2.6.

(3) Disconnect the four connectors from the radar processing circuit.

Remove Remove

4-37� � � � � � � � � � �

(4) Remove the eight hexagonal support posts that secure the radar processing circuit.

(Socket wrench for 5.5 mm bolts)

(5) Remove the nine screws that secure the radar processing circuit, and replace it.


[Mounting]

(1) Confirm that the DIP switch settings are the same between the old and new radar processing

circuits.

(2) Assemble the unit in reverse order of removal.

[Operation check]


(2) Check that an error message is not displayed.

(3) Restore the setup data you saved, and set the transmission time and operating time of the

scanner unit you wrote down.

(4) Transmit radar signals and check that radar images are displayed normally.

Remove Remove

Remove Remove

4-38� � � � � � � � � � �

(5) Check that the connected external sensors (e.g., true bearing, ship speed, latitude/longitudinal,

and AIS) are displayed normally.

4.2.4. Battery [Notes]

(1) If the battery is inserted with the polarities being opposite, remove it immediately. Do not use the

battery any more.

(2) Do not place the battery on a board or conductive object during the work.

[Required tools]

A standard screwdriver for adjustment


[Removal]


(2) Insert the standard screwdriver for adjustment into between the battery and the battery holder, and

lift the batter. (Standard screwdriver for adjustment)

(3) Insert the standard screwdriver for adjustment into the location shown in the picture, and slide off

the battery sideways.

4-39� � � � � � � � � � �

[Mounting]

(1) Check the polarities of the battery. Make sure that the positive polarity is upward.

(2) Insert the battery into the battery holder sideways.

(3) Check that the battery is fully inserted.

[Operation check]



4-40� � � � � � � � � � �

4.2.5. Target Tracking (TT) Unit NCA-877A [Required tools]


[Removal]


(2) The TT circuit can be seen on the radar processing circuit.

(3) Remove the four screws that secure the ARPA circuit, and remove the TT circuit lifting it straight up.


[Mounting]


[Operation check]



(3) Generate pseudo targets according to Section 5.2.7 II of the instruction manual, and check that the

targets can be acquired.

(4) Display the numeric data of the acquired targets, and check that the correct values are displayed.

Remove Remove

TT circuit

4-41� � � � � � � � � � �

4.2.6. AIS Processing Circuit NQA-2155 [Required tools]


[Removal]


(2) The AIS processing circuit can be seen on the radar processing circuit.

(3) The AIS circuit and power circuit are connected with connector-attached cables. Disconnect the

connector from the power circuit.

AIS processing circuit

Disconnect the connector.

4-42� � � � � � � � � � �

(4) Remove the four screws that secure the AIS processing circuit, and replace it.


[Mounting]

(1) Confirm that the DIP switch and short plug settings are the same between the old and new AIS

processing circuits.

(2) Connect the connector-attached cables to the new AIS processing circuit.


[Operation check]



4-43� � � � � � � � � � �

4.2.7. GYRO I/F Circuit CMJ-304E [Required tools]


[Removal]

(1) Remove the four screws that secure the NSK Unit

NCT-4106A cover.


(2) Disconnect the gyro/log cables.

(3) Detach the connector that is attached to the

GYRO•LOG I/F circuit.

Remove

Remove

4-44� � � � � � � � � � �

(4) Remove the six screws that secure the GYRO/LOG I/F

circuit, and replace it.


[Mounting]

(1) Check that the DIP switch settings of the GYRO I/F circuit are correct.

Check the GYRO I/F circuit fuses.


(3) Start the equipment, and set the true bearing value.

[Operation check]


(2) The true bearing value is traced correctly. (Resolution, and rotation direction)

4-45� � � � � � � � � � �

4.2.8. GYRO I/F Circuit Fuses [Required tools]


A standard screwdriver for 3 mm screws

[Removal]

(1) Remove the ten screws (4: upper, 3: right side,

and 3: left side) from the processor unit cover,

and remove it.


(2) The four fuse holders placed in a line can

be seen.

(3) To uncap a fuse holder, turn the standard

screwdriver while pushing against the

holder cap.

(Standard screwdriver for 3 mm screws)

Fuse holder

Push and turn

4-46� � � � � � � � � � �

(4) Take out the fuse and check if it is blown.

If it is blown, replace it.

(5) Similarly, check the three other fuses.

[Mounting]


(2) Start the equipment, and set the true bearing value.

[Operation check]


(2) The true bearing value is traced correctly. (Resolution, and rotation direction)

4-47� � � � � � � � � � �

Remove

4.2.9. Operation Circuit CCK-979 for the Standard Operation Unit [Required tools]

A hexagonal Allen wrench (1.5 mm)


[Removal]

(1) Loosen the slotted-head screws that secure

the six controls, and remove the controls.

(Hexagonal Allen wrench: 1.5 mm)

(2) Remove the seven setscrews, and open

the rear cover.


(3) Disconnect the four connectors, and

remove the rear cover.

Remove

Remove

4-48� � � � � � � � � � �

(4) Remove the 20 setscrews, and remove

the front cover.


(5) Peel off the key rubber, disconnect

the connector, and replace the board.

[Mounting]

(1) Assemble the operation unit in reverse order of removal.

When mounting the front cover, make sure that the keys on the key rubber fit snugly into the

corresponding holes in the front cover.

[Operation check]



(3) Perform a key test, buzzer test, and light test according to Section 8.3.1.3 of the instruction manual,

and check that no abnormality is detected.

(4) Check that the controls turn smoothly.

(5) Confirm that you feel the reaction (clicking) of each control when pressing it.

Remove Peel off

4-49� � � � � � � � � � �

4.2.10. PS2 Connector Circuit CQC-1204 for the Standard Operation Unit [Required tools]


[Removal]


the rear cover.


(2) Disconnect the two connectors, and remove

the rear cover.

(3) Remove the 2 setscrews, and replace

the PS2 connector circuit.


Remove

Remove

Remove

Remove

4-50� � � � � � � � � � �

[Mounting]


[Operation check]





(4) Check that the PS2 mouse operates normally.

4-51� � � � � � � � � � �

4.2.11. Trackball TRD-101S(BK)N1 for the Standard Operation Unit [Required tools]


[Removal]


the rear cover.


(2) Disconnect the connector from

the trackball, and replace the trackball.

[Mounting]


[Operation check]





Remove

Remove

Remove

4-52� � � � � � � � � � �

� � � � � � � � � � �

Chapter 5 Program Update�

� � � � � � � � � � �

5-1� � � � � � � � � � �

5.1. Main Program Update Procedure

5.1.1. Items to be Provided • Compact flash card • PC card adapter for compact flash cards • New electronic program file (File name: 5200MK2prg.bin) 5.1.2. Update Procedure (1) Copy the new electronic program file into the root directory on the compact flash

card. (2) Insert the compact flash card with the PC

card adapter into card slot 2 (upper slot) in the processor unit (NDC-1460).

(3) Turn on the radar display system. (4) When the program update confirmation

screen is displayed, press the ENT button on the keyboard. (If program update is to be canceled, press the CLR/INFO button.)

(5) When the message "Remove the card and

restart" is displayed, remove the compact flash card, and restart the system.

Slot 1

Slot 2

5-2� � � � � � � � � � �

5.2. AIS Processing Circuit Update Procedure

5.2.1. Items to be Provided • Compact flash card • PC card adapter for compact flash cards • New electronic program file (File name: AIS5200MK2prg_V****.bin)

(**** indicates the program version.) 5.2.2. Update Procedure Copy the new electronic program file for AIS processing circuit into the root directory on the compact flash card. (1) Insert the compact flash card with the PC

card adapter into card slot 2 (upper slot) in the processor unit (NDC-1460).

(2) Turn on the radar display system. (3) Hold down the "RADAR MENU" key on the

keyboard for two seconds or more. (4) When the "Code Input" screen is displayed,

enter "0" and press the ENT button. (5) When the "Adjust" menu is displayed, select

"2. Maintenance Menu" - "8. AIS PROC Program Update." (6) When the execution confirmation dialog box is displayed, select "1. Yes." (7) When the program update progress indicator reaches 100% and the execution

confirmation dialog box disappears, the program update is complete.

Slot 1

Slot 2

5-3� � � � � � � � � � �

5.3. How to Check the Version

(1) Select "Main Menu" - "1. RADAR Menu" - "8. RADAR Sub Menu" - "9. Test Menu" - "6. System INFO."

(2) Move the cursor onto the "Exit" button, and press the CLR/INFO key on the

keyboard five times. (3) Check the "Indicator" and "AIS" software versions in the newly displayed "System

INFO." Indicator : Software version of the main program AIS : Software version of the AIS processing circuit

5-4� � � � � � � � � � �

� � � � � � � � � � �

Chapter 6 Troubleshooting�

� � � � � � � � � � �

6-1� � � � � � � � � � �

Perform operation checks on the radar equipment at regular intervals, and if any

abnormality is detected, immediately start inspection on the abnormality. In particular, be careful of the high voltages during operation checks, and caution should be taken to avoid incorrect or carelessness measurement which can cause trouble. Take notes of the check results that are very useful as reference during the next operation check.

6.1. Operation Check

This equipment has a self-diagnostic function for checking the equipment internal

operation conditions. Open the Test Menu to perform the self-diagnostic function.

Procedure 1 Perform the following menu operation to open the Test Menu.

Main Menu � 1. RADAR Menu � 8. RADAR Sub Menu

� 9. Test Menu

2 Select the item you want to check.

1. Self Test 1. Self-diagnostic function 2. Monitor Test 2. Monitor check 3. Keyboard Test 3. Operation panel check 4. MON Display 4. Performance monitor 5. Alarm List / Log 5. Error log display 6. System INFO 6. System information display MAGI Indication of magnetron current

3 The check contents will be displayed.

In the transmission state, the magnetron current is displayed in a bar graph. Shown below are the normal values of transmitters. (Measurement in 48 nm range) 10 kW: Magnetron current indicator bar reaches 40 to 60%. 25 kW: Magnetron current indicator bar reaches 60 to 90%

6-2� � � � � � � � � � �

6.1.1. Self-diagnostic Function (Self Test)

This function checks the memory, scanner unit, and communication lines.

1. Memory Test 1. Display-system internal memory check 2. TXRX Test 2. Scanner unit check 3. Line Test 3. Communication line check

� Display-system internal memory check (Memory Test)

Checks the internal memory operating conditions.

1. SDRAM 1. SDRAM check 2. SRAM 2. SRAM check 3. Flash ROM 3. Flash ROM check 4. Graphic 4. Graphic check

If no abnormality is detected, "OK" is displayed; if an abnormality is detected, "NG" is displayed.

Scanner unit check (TXRX Test)

Checks signals from the scanner.

Safety Switch Scanner-unit safety switch check AZI Pulse Antenna rotation signal check HL Pulse Heading line signal check MH Current Check on the load current of high voltage in the modulator Trigger Radar trigger signal check Video Radar image check

If no abnormality is detected, "OK" is displayed; if an abnormality is detected, "NG" is displayed. ** is displayed when the equipment is in standby state.

6-3� � � � � � � � � � �

Communication line check (Line Test) Checks the status of communication with optional equipment, external navigators, or the likes.

TXRX Check on connection with the scanner unit NSK Check on connection with the NSK (NCT-4106A) unit Compass Check on connection with equipment on the compass port COM1 Check on connection with the COM1 port COM2 Check on connection with the COM2 port COM3 Check on connection with the COM3 port COM4 Check on connection with the COM4 port Plotter Key Check on connection with the plotter control unit

If no abnormality is detected, "OK" is displayed; if an abnormality is detected, "NG" is displayed. ** is displayed for equipment not connected.

6.1.2. Display Unit Check (Monitor Test)

This function checks the display unit. The test pattern will be shown on the display.

1. Pattern1 : 1. Filled in solid white 2. Pattern2 : 2. A white box is displayed on a black background of

1280 � 1024 dots. 3. Pattern3 : 3. Two squares, two circles, and nine cross shapes are

displayed (with white lines on a black background). 4. Pattern4 : 4. Letters "H" of 9 � 9 dots are displayed on the entire

screen (with white letters on a black background). 5. Pattern5 : 5. A gray scale (16 levels) is displayed. 6. Pattern6 : 6. A color bar is displayed. 7. Pattern7 : 7. Colors specified with RGB are displayed.

To return to the ordinary display, press any key. If no test pattern is displayed, a monitor error is assumed.

6-4� � � � � � � � � � �

6.1.3. Operation Unit Check (Keyboard Test)

This function checks the controls and switches on the operation panel.

1. Key Test 1. Key check 2. Buzzer Test 2. Buzzer check 3. Light 3. Operation panel light check

� Key check (Key Test)

Checks the controls and switches on the operation panel. Each operation panel key on the display is highlighted at the same time as the key is pressed, and the name of the pressed key is displayed.

Buzzer check (Buzzer Test)

Checks the operation panel buzzer. The buzzer will sound. The buzzer automatically stops after it sounds for a specified length of time.

Operation panel light check (Light Test)

Checks the operation panel light. The brightness of the operation panel light will increase gradually in four levels.

6-5� � � � � � � � � � �

6.1.4. Performance Monitor (MON Display)

This function displays the performance monitor status.

* Transmitter System Check on the attenuation of the transmitter system

Attenuation Value * Receiver System Check on the attenuation of the receiver

system MON Pattern Range Attenuation Value

Note: When checking the attenuation of the transmitter system, read the value one

minute after you open this menu.

Procedure 1. Turn the [VRM] control until VRM reaches the furthest end of the performance

monitor pattern.

The attenuation of the receiver system will be displayed for Attenuation Value of *Receiver System .

6.1.5. System Alarm Log Display (Alarm List/Log)

If a system error occurs, this function highlights the error. Errors that have been reset are also displayed in time series. Alarm logs are cleared by pressing the All Clear button on the log display screen.

6-6� � � � � � � � � � �

6.1.6. System Information Display (System INFO)

This function displays system information such as the hours of using the magnetron, the program versions, etc. * Indicator Ver.**.** Display system program version * TXRX Ver.**.** Scanner program version * System No. No.**.** Display system number * TXRX Time Transmit *** hrs Transmission hours Motor *** hrs Hours of using the scanner motor Total *** hrs Hours of using the scanner unit * System Time * Total **** hrs Hours of using the display system

6-7� � � � � � � � � � �

6.2. Error Message Lists

6.2.1. Error Messages for the Scanner Unit

TXRX(SSW Off) Description

This message indicates that the safety switch on the scanner unit is OFF. Transmission is not

allowed when the safety switch is OFF.

Location of cause � Procedure Safety switch on the

scanner unit

� Set the safety switch to ON.

� Check the safety switch S101.

CMC-1205R in the

scanner unit

� Check the insertion of J1105 on the CMC-1205R.

� Replace the CMC-1205R.

TXRX(MHV) Description

This message indicates that the high-voltage power supply for the modulation circuit in the

scanner unit is abnormal.

The power circuit CBD-1682A or the modulation circuit CPA-264 may be faulty.

Location of cause � Procedure CPA-264 in the

scanner unit

� Check the insertion of connectors J2102 and J2101 on the

modulation circuit CPA-264.

� Replace the CPA-264.

CBD-1682A in the

scanner unit

� Check the insertion of connector J1002 on the power circuit

CBD-1682A.

Replace the CBD-1682A.

CMC-1205R in the

scanner unit

� Check the insertion of P1111 on the CMC-1205R.


Cables in the scanner

unit

� Check the cables in the scanner unit.

W003, W107, and W201

6-8� � � � � � � � � � �

TXRX(Reverse) Description

In circumstances where the antenna is subjected to "external force due to strong wind (equivalent

to wind speed 51.5 m/s) that exceeds the capacity for driving the scanner, the scanner unit enters

the protection mode and does not drive the motor. If the motor is reversed by strong wind under

such circumstances, this error message is displayed. If transmission can be restarted normally

when the wind has died down, there is no failure. If transmission cannot be restarted, a scanner

driving system error is suspected. In this case, check the items below.

Location of cause � Procedure CSC-656 in the

scanner unit

� Check the scanner motor power line.

� If it is faulty, replace the CSC-656.

CBD-2000/CBD-2001

in the scanner unit

� Check the scanner motor power line.

� If it is faulty, replace the CBD-2000/2001.

Motor in the scanner

unit

� Check the motor cabling.

� Replace the motor B101.

(The type of motor B101 varies depending on the scanner unit.)

TXRX(Heater) Description

This message indicates that the magnetron heater power supply in the scanner unit is faulty.

The power circuit CBD-1682A, the T/R control circuit CMC-1205R, or the modulation circuit

CPA-264 may be faulty.


scanner unit




CBD-1682A in the

scanner unit


CBD-1682A.

Replace the CBD-1682A.

CMC-1205R in the

scanner unit

� Check the insertion of P1111 and J1103 on the CMC-1205R.



unit


W003, W005, and W104

6-9� � � � � � � � � � �

TXRX(Video) Description

This message indicates that the radar video signal from the scanner is faulty.

If TXRX(MHV) or TXRX(Heater) is displayed, handle the error first.

Since this message is displayed even when the transmitter is not operating, first check the

magnetron current on the test menu of the display system, and check if the transmission function

is normal.

If the transmission function is abnormal, the modulation circuit CPA-264, the power circuit

CBD-1682A, or the T/R control circuit CMC-1205R may be faulty.

If the transmission function is normal, the receiver NRG-162A/NRG-229 may be faulty.


scanner unit




CMC-1205R in the

scanner unit



CBD-1682A in the

scanner unit


CBD-1682A.

� Replace the CBD-1682A.

NRG-162A or

NRG-229 in the

scanner unit

� Check the insertion of the connector J101 on the receiver

NRG-162A or NRG-229.

� Check the insertion of J1109 and J1110 on the CMC-1205R.

� Replace the receiver NRG-162A or NRG-229.


unit


W003, W005, W104, and W001

TXRX(Trigger) Description

This message indicates that the trigger signal from the scanner is faulty.

The T/R control circuit CMC-1205R may be faulty.

Location of cause � Procedure CMC-1205R in the

scanner unit


6-10� � � � � � � � � � �

TXRX(Fan1) TXRX(Fan2) Description

These messages indicate that the fan in the scanner unit is faulty.

Location of cause � Procedure B103 and B104 in the

scanner unit


� Replace the B103 and B104.

TXRX(Motor) Description

This message indicates that the motor in the scanner unit is faulty.

Location of cause � Procedure Motor in the scanner

unit

� Check the motor cabling.



6-11� � � � � � � � � � �

TXRX(AZI) Description

This message indicates that a rotation signal is not output from the scanner. If the message is

displayed, the radar forcibly stops transmission.

A rotation signal may not be output when the motor is stopped.

First check that the motor is running. If the driving system is protected from strong wind, the

motor is stopped, and the error message may be displayed. In this case, there is no failure, and

transmission can be restarted when the wind has died down.

If the motor is not running, the motor, the relay circuit CSC-656, an equipment cable, or the

power terminal board circuit in the display system may be faulty.

If the motor is running, the encoder or the T/R control circuit CMC-1205R may be faulty.

Location of cause � Procedure Equipment cable in

the scanner unit

� Check the scanner equipment cables.

TB103/TB203 �A and �B, TB104/TB204 VERR/E, and

TB103/TB202 U1/V1

Power terminal board

circuit CBD-1702A in

the display system

� Check the fuse F3 on the power terminal board circuit CBD-1702A,

and replace it if blown.

� Check the CBD-1702A cable connection. J5002, J5003


unit

� Check the cabling of the motor B101.



Encoder in the

scanner unit

� Check the cabling of the encoder B102.

� Replace the encoder B102.

(The type of encoder B102 varies depending on the scanner unit.)

CMC-1205R in the

scanner unit



CSC-656 in the

scanner unit

� Check the insertion of each connector on the CSC-656.

� Replace the CSC-656.

6-12� � � � � � � � � � �

TXRX(HL) Description

This message indicates that a reference position signal is not output from the scanner. If the

message is displayed, the radar forcibly stops transmission.

A reference position signal may not be output when the motor is stopped.

First check that the motor is running.

If the motor is not running, the motor, the relay circuit CSC-656, an equipment cable, or the

power terminal board circuit in the display system may be faulty.

If the motor is running, the encoder or the T/R control circuit CMC-1205R may be faulty.

Location of cause � Procedure Equipment cable in

the scanner unit


TB103/TB203 �Z, TB104/TB204 VERR/E, and TB103/TB202

U1/V1



the display system





unit

� Check the cabling of the motor B101.



Encoder in the

scanner unit

� Check the cabling of the encoder B102.

� Replace the encoder B102.

(The type of encoder B102 varies depending on the scanner unit.)

CMC-1205R in the

scanner unit



CSC-656 in the

scanner unit

� Check the insertion of each connector on the CSC-656.

� Replace the CSC-656.

6-13� � � � � � � � � � �

TXRX(Data) Description

This message indicates that communication between the display system and scammer is faulty.

If the message is displayed, radar transmission is not permitted.

The communication error is caused by either of the following:

• Cable fault between the display system and scanner unit

• No power supply to the scanner unit

First check the voltage of power supply to the scanner unit, and identify the cause of the error.

Location of cause � Procedure Power terminal board


the display system





Equipment cable in

the scanner unit


TB201 MTR+/MTR- and TB203 +48V/+48VG

CMC-1205R in the

scanner unit

� Check the insertion of each connector on the CMC-1205R.

TB101 MTR+/MTR- and J1103


CBD-1682A in the

scanner unit

� Check the insertion of each connector on the power circuit

CBD-1682A.

J3 1A/2A: 48 VDC and J1003


6-14� � � � � � � � � � �

6.2.2. Error Messages for the Display System

Keyboard(Data) Keyboard2(Data) Description

These messages indicate that communication with the operation unit is faulty. Keyboard(Data)

indicates the communication status of the main operation unit; Keyboard 2(Data) indicates the

communication status of the sub-operation unit.

The operation unit may be faulty, an operation unit cable may be broken, the power terminal

board circuit in the display system may be faulty, or the radar processing circuit may be faulty.

Location of cause � Procedure CCK-979 (English

version) or CCK-980

(Japanese version) in

the operation unit

� Check the insertion of J6001 on the operation circuit CCK-979/980.

� Replace the operation circuit CCK-979/980.

� Replace the operation unit NCE-7699A or NCE-7729A.



the display system

Keyboard(Data):

� Check the insertion of J5002 and J5003 on the power terminal

board circuit CBD-1702A.

� Check the connection of operation unit cable J4.


Keyboard2(Data):

� Check the insertion of J5002, J5003, and J5007 on the power

terminal board circuit CBD-1702A.

� Check the connection of operation unit cable J9(AUX).


CDC-1350 in the

display system

� Check the insertion of J4402 and J4003 on the radar processing

circuit CDC-1350.

� Replace the CDC-1350.

6-15� � � � � � � � � � �

PROC(Trigger) Description

This message indicates that the trigger signal from the scanner is faulty.

If TXRX(Trigger) or TXRX(Data) is displayed, handle the error first.

A scanner equipment cable may be broken, the power terminal board circuit in the display system

may be faulty, or the radar processing circuit may be faulty.



the display system



CDC-1350 in the

display system


circuit CDC-1350.


PROC(AZI) Description

This message indicates that the rotation signal from the scanner is faulty.

If TXRX(AZI) or TXRX(Data) is displayed, handle the error first.





the display system



CDC-1350 in the

display system


circuit CDC-1350.


6-16� � � � � � � � � � �

PROC(HL) Description

This message indicates that the reference position signal from the scanner is faulty.

If TXRX(HL) or TXRX(Data) is displayed, handle the error first.





the display system



CDC-1350 in the

display system


circuit CDC-1350.


PROC(Video) Description

This message indicates that the radar video signal from the scanner is faulty.

If TXRX(Video) or TXRX(Data) is displayed, handle the error first.





the display system



CDC-1350 in the

display system


circuit CDC-1350.


6-17� � � � � � � � � � �

PROC(INT) Description

This message indicates that the processing reference pulse signal in the radar processing circuit

is faulty.

If TXRX(Trigger), TXRX(Data), or PROC(Trigger) is displayed, handle the error first.





the display system



CDC-1350 in the

display system


circuit CDC-1350.


Indicator(Fan) Description

If the NCD-4380(NCM-866) is used, a jumper plug is inserted instead of providing a cooling fan.

This message indicates that the jumper plug is faulty.�

If the NCD-4390 is used, the message indicates that the cooling fan in the display system is

faulty.

The fan in the display system may be faulty or the jumper plug may be broken, or the input-output

section may be faulty.

Location of cause � Procedure Fan or cable in the

display system

� Replace the fan in the display system.

� Replace the jumper cable in the display system.



the display system

If the NCD-4380(NCM-866) is used:

� Check the jumper cable connection of the CBD-1702A. J5006


If the NCD-4390 is used:

� Check the cooling fan on the CBD-1702A.


6-18� � � � � � � � � � �

ASIC1 to RADAR Description

This message indicates that the signal to the DSP circuit from the radar processing circuit in the

display system is faulty.

In general, the DSP circuit is not installed, so the message is not to be displayed.

RADAR to ASIC2 Description

This message indicates that the signal to the radar processing circuit from the DSP circuit in the

processor unit of the display system is faulty.

In general, the DSP circuit is not installed, so the message is not to be displayed.

AIS PROC(Data) Description

This message indicates that the signal to the radar processing circuit from the AIS processor in

the processor unit of the display system is faulty.

If the message is displayed, AIS information cannot be displayed.

Location of cause � Procedure NQA-2155

(CDC-1353)

CDC-1350 in the

display system

� Check the mounting status of the AIS processor NQA-2155.

� Replace the AIS processor NQA-2155.

� Replace the radar processing circuit CDC-1350.

6-19� � � � � � � � � � �

6.2.3. Error Messages for the External Input-Output Equipment

NSK(Time Out) Description

This message indicates that the communication signals of the NSK unit connected to the display

system and the radar processing circuit are faulty.

If the message is displayed, the true bearing value cannot be displayed.

The NSK unit, the power terminal board circuit in the display system, or the radar processing

circuit may be faulty.

Location of cause � Procedure NSK unit

NCT-4106A

(CMJ-304E)

� Check the insertion of the 8-pin connector on the NSK unit

NCT-4106A.

� Check the lighting of LEDs on the NSK unit NCT-4106A.

� Replace the NSK unit NCT-4106A.



the display system

� Check the CBD-1702A cable connection. J5, J5002, J5003


CDC-1350 in the

display system


circuit CDC-1350.


GYRO(Data) Description

This message indicates that the NSK unit connected to the display system cannot recognize the

GYRO signal.

If the message is displayed, the true bearing value cannot be displayed.

A fuse in the NSK unit may be blown or the NSK unit may be faulty.

There may be no GYRO output or GYRO signal amplification may be too low.

Location of cause � Procedure NSK unit

NCT-4106A

(CMJ-304E)

� Check the insertion of the 8-pin connector on the NSK unit NCT-4106A.

� Check the connections of cables of the NSK unit NCT-4106A.

TB10

� Check the settings of switches on the NSK unit NCT-4106A.

� Check the fuses F1 to F4 on the NSK unit NCT-4106A.

� Replace the NSK unit NCT-4106A.

6-20� � � � � � � � � � �

Heading(Time Out), Heading(Data) Description

These messages indicate that true bearing data cannot be recognized by the radar processing

circuit in the display system.

If either of the messages is displayed, the true bearing value cannot be displayed.

The input-output unit or the radar processing circuit may be faulty.

The baud rate of the serial port for Heading may not be correct.



the display system

� Check the CBD-1702A cable connection. J5, J5002, J5003


CDC-1350 in the

display system


circuit CDC-1350.

� Check the baud rate in the initial setting menu.

� Check if Compass is selected for Heading Equipment Setting in the

initial setting menu.

� Replace the radar processing circuit (CDC-1350) in the processor unit.

6-21� � � � � � � � � � �

Position(Data) Description

This message indicates that position data cannot be recognized by the radar processing circuit in

the display system.

If the message is displayed, latitudes and longitudes cannot be displayed.

The power terminal board circuit in the display system or the radar processing circuit may be

faulty.

The baud rate of the serial port for the GPS may not be correct.

A setting may not be made for using the receive port to which the GPS is connected.

There may be no GPS output.



the display system

� Check the CBD-1702A cable connection. J3,J5002,J5003


CDC-1350 in the

display system


circuit CDC-1350.


� In the initial setting menu, check the receive port to be used.


6-22� � � � � � � � � � �

GPS(Data) Description

This message indicates that date data cannot be recognized by the radar processing circuit in the

display system.

If the message is displayed, the automatic time correction function cannot be used.


faulty.

The baud rate of the serial port for the GPS may not be correct.

A setting may not be made for using the receive port to which the GPS is connected.

There may be no GPS output.



the display system



CDC-1350 in the

display system


circuit CDC-1350.




GPS(Status) Description

This message indicates that GPS information received by the radar processing circuit in the

display system is not correct.

If the message is displayed, latitudes and longitudes cannot be displayed.

Position fixing may not be done in the GPS receiver.

Location of cause � Procedure GPS receiver � Make a setting for position information to be fixed in the GPS

receiver.

6-23� � � � � � � � � � �

2AXW(Time Out), 2AXW(Data), 2AXG(Time Out), 2AXG(Data) Description

These messages indicate that the serial log signal is faulty if 2AXG or 2AXW is selected

as the ship speed information to be used.

If any of the messages is displayed, the ship speed cannot be displayed.


faulty.

The baud rate of the serial port for the log may not be correct.

A setting may not be made for using the receive port to which the log is connected.

There may be no log output.

The message is not displayed any more when other ship speed information is selected.



the display system



CDC-1350 in the

display system


circuit CDC-1350.



� Use other ship speed information (MAN, GPS, or Log).


6-24� � � � � � � � � � �

AIS(Time Out), AIS(Data) Description

These messages indicate that AIS data cannot be recognized by the AIS processing circuit in the

display system.

If either of the messages is displayed, AIS information cannot be displayed.

The power terminal board circuit in the display system, the AIS processing circuit, or the radar

processing circuit may be faulty.

The baud rate of the serial port for the AIS may not be correct.

A setting may not be made for using the receive port to which the AIS is connected.

There may be no AIS output.



the display system



CDC-1350 in the

display system


circuit CDC-1350.




AIS Alarm *** Description

This message indicates that alarm information is included in AIS data received by this radar

equipment. The three asterisks "***" are shown with a 3-digit number indicating an alarm type

(alarm number).

The message is displayed if the AIS unit is faulty.

In response to the message, nothing can be done on the radar equipment. Solve the problem

on the AIS unit. For the alarm number, see the instruction manual of the AIS unit connected.

If the message is displayed, a navigator such as a GYRO or GPS is not connected to the AIS unit

in many cases.

Location of cause � Procedure AIS unit � Solve the problem on the AIS unit.

6-25� � � � � � � � � � �

Depth(Time Out), Depth(Data) Description

If water depth data is received from a serial port, these messages indicate that the serial data is

abnormal.

If either of the messages is displayed, water depth data cannot be displayed.


faulty.

The baud rate of the serial port for water depth data may not be correct.

A setting may not be made for using the receive port to which the echo sounder is connected.

There may be no echo sounder output.



the display system



CDC-1350 in the

display system


circuit CDC-1350.




6-26� � � � � � � � � � �

Temperature(Time Out), Temperature(Data) Description

If water temperature data is received from a serial port, these messages indicate that the serial

data is abnormal.

If either of the messages is displayed, water temperature data cannot be displayed.


faulty.

The baud rate of the serial port for water temperature data may not be correct.

A setting may not be made for using the receive port to which the water temperature sensor is

connected.

There may be no output from the water temperature sensor.



the display system



CDC-1350 in the

display system


circuit CDC-1350.




6-27� � � � � � � � � � �

Wind(Time Out), Wind(Data) Description

If wind direction/speed data is received from a serial port, these messages indicate that the serial

data is abnormal.

If either of the messages is displayed, wind direction/speed data cannot be displayed.


faulty.

The baud rate of the serial port for wind direction/speed data may not be correct.

A setting may not be made for using the receive port to which the vane anemometer sensor is

connected.

There may be no output from the vane anemometer sensor.



the display system



CDC-1350 in the

display system


circuit CDC-1350.




6-28� � � � � � � � � � �

Current(Time Out), Current(Data) Description

If tidal current data is received from a serial port, these messages indicate that the serial data is

abnormal.

If either of the messages is displayed, tidal current data cannot be displayed.


faulty.

The baud rate of the serial port for tidal current data may not be correct.

A setting may not be made for using the receive port to which the current meter sensor is

connected.

There may be no output from the current meter sensor.



the display system



CDC-1350 in the

display system


circuit CDC-1350.




6-29� � � � � � � � � � �

Rate of Turn(Time Out), Rate of Turn(Data) Description

If turning speed data (Rate of Turn) is received from a serial port, these messages indicate that

the serial data is abnormal.

If either of the messages is displayed, ROT cannot be displayed.


faulty.

The baud rate of the serial port for ROT may not be correct.

A setting may not be made for using the receive port to which the GYRO is connected.

There may be no GRYO output.



the display system



CDC-1350 in the

display system


circuit CDC-1350.




6-30� � � � � � � � � � �

Rudder(Time Out), Rudder(Data) Description

If rudder angle sensor data is received from a serial port, these messages indicate that the serial

data is abnormal.

If either of the messages is displayed, the rudder angle cannot be displayed.


faulty.

The baud rate of the serial port for rudder angle data may not be correct.

A setting may not be made for using the receive port to which the rudder angle sensor is

connected.

There may be no output from the rudder angle sensor.



the display system



CDC-1350 in the

display system

� Check the insertion of J4402 and J4003 on the radar processing circuit

CDC-1350.




6-31� � � � � � � � � � �

6.3. Examples of Trouble

6.3.1. Internal Circuits The radar display flickers on and off

Description

The radar is operating normally, but the radar display appears and disappears at intervals.

Location of cause � Procedure Connection A connector may not be connected correctly. Check the connection of

the RGB connector (J7) and LCD power connector (J6).

Input voltage The input voltage may be too low. Check the voltage.

The power cannot be turned on.

Description

Pressing the power switch does not start the equipment.

Location of cause � Procedure Circuit breaker Check that the circuit breaker is turned on.

Input voltage The protection circuit may be activated because the input voltage is too

high. (Preset protective voltage +42 VDC)

Check the voltage.

The cursor cannot be operated with the trackball.

Description

The cursor cannot be moved by operating the trackball.

Location of cause � Procedure Setting Check that the equipment is not in a mode for operation with the EBL or

VRM control.

To return to the ordinary operation mode, hold down EBL.

Trackball If operation with the EBL or VRM control is also impossible, replace the

trackball.

6-32� � � � � � � � � � �

Lines you have not entered are displayed.

Description

Lines you have not entered are shown on the radar display.

Location of cause � Procedure PI They may be PI (parallel index) lines. Check that PI display is off.

MOB The MOB key may have been pressed. Hold down the MOB key to

see if the condition is improved.

Destination A destination may be set. Check if a destination is set, and clear the

destination setting if so. For details, see the NDB-34A plotter

instruction manual.

Temporary destination A temporary destination may be set. Assign the user key to the end

point key (�), and double-click at any position.

For the user key setting procedure, see the instruction manual.

The initial acquisition mark is not displayed.

Description

A target is selected, but the initial acquisition mark is not displayed.

Location of cause � Procedure TT brilliance Check that TT brilliance is not set to 0.

ARPA/ATA circuit Replace the ARPA/ATA circuit.

A Keyboard(DATA) error message is displayed.

Description

Operation can be performed, but a Keyboard(DATA) error message is displayed.

Location of cause � Procedure Connection The operation unit may be connected to the AUX connector instead of

J4. Check the connection of the operation unit.

6-33� � � � � � � � � � �

6.3.2. External Equipment Connection cannot be established with external equipment for NMEA output.

Description

The following may cause this trouble: connection polarity, baud rate setting, setting for using

external navigator, or output-equipment fan failure.

Location of cause � Procedure Polarity If the connection is correct, the output is LOW at the time of no signal

when viewed with the negative side as reference on the oscilloscope.

Baud rate Adjust the baud rate to the value defined in the output specifications for

the navigator.

Output-equipment fan

failure

Check that multiple devices are not connected to the same port on the

external equipment. Signals may not arrive correctly because the

output capacity of the external equipment is exceeded. Follow the

external equipment specifications.

The true bearing value cannot be displayed correctly.

Description

The setting may not be correct, or the bearing sensor may have a problem.

Location of cause � Procedure Setting The GYRO I/F circuit may not be set correctly.

Check if the setting is suitable for the equipment in use.

GYRO(DATA)

Step type

If signal amplification is too low when a step-type gyro is used, an error

may be posted. In many cases, the error can occur if the multiple

devices are connected with the same port and the output capacity of the

gyro compass is exceeded.

In only a few cases, electric potential at LOW level of the output signal

increases at that time. To conform to the input specifications for the

GYRO I/F circuit, voltage at LOW level must be �2.5 V or less. Voltage

at HIGH level must be �20 V or more.

GYRO(DATA)

Synchro type

If an error occurs intermittently, it may be improved by setting DIP-SW

S4 No. 5 on the GYRO I/F circuit to ON. However, note that the setting

of S4(5) simply extends time for error determination and does not solve

the essential problem of the gyro.

6-34� � � � � � � � � � �

� � � � � � � � � � �

Chapter 7 Drawings�

� � � � � � � � � � �

7-1� � � � � � � � � � �

7.1. Outline Drawings

Figure 7.1 Outline Drawing of the Scanner Unit NKE-2254-7 Figure 7.2 Outline Drawing of the Scanner Unit NKE-2254-9 Figure 7.3 Outline Drawing of the Scanner Unit NKE-2103-4/4HS Figure 7.4 Outline Drawing of the Scanner Unit NKE-2103-6/6HS Figure 7.5 Outline Drawing of the Display System NDC-1460 Figure 7.6 Outline Drawing of the Display Unit NWZ-164 Figure 7.7 Outline Drawing of the Operation Unit NCE-7699A Figure 7.8 Outline Drawing of the Multi-function Operation Unit NCE-7729A Figure 7.9 Outline Drawing of the Rectifier NBA-5111 (Option) Figure 7.10 Overall System Diagram of the Radar JMA-5222-7/9 Figure 7.11 Overall System Diagram of the Radar JMA-5212-4/6/4HS/6HS Figure 7.12 Inter-Unit Connection Diagram of the JMA-5222-7/9 Figure 7.13 Inter-Unit Connection Diagram of the JMA-5212-4/6/4HS/6HS Figure 7.14 Internal Connection Diagram of the Scanner Unit NKE-2254 Figure 7.15 Internal Connection Diagram of the Scanner Unit NKE-2103 Figure 7.16 Internal Connection Diagram of the Processor Unit NDC-1460

7-2� � � � � � � � � � �

7.1.1. Outline Drawing of the Scanner Unit NKE-2254-7

Figure 7.1 Outline Drawing of the Scanner Unit NKE-2254-7

7-3� � � � � � � � � � �

7.1.2. Outline Drawing of the Scanner Unit NKE-2254-9

Figure 7.2 Outline Drawing of the Scanner Unit NKE-2254-9

7-4� � � � � � � � � � �

7.1.3. Outline Drawing of the Scanner Unit NKE-2103-4/4HS

Figure 7.3 Outline Drawing of the Scanner Unit NKE-2103-4/4HS

7-5� � � � � � � � � � �

7.1.4. Outline Drawing of the Scanner Unit NKE-2103-6/6HS

Figure 7.4 Outline Drawing of the Scanner Unit NKE-2103-6/6HS

7-6� � � � � � � � � � �

7.1.5. Outline Drawing of the Display System NDC-1460

Figure 7.5 Outline Drawing of the Display System NDC-1460

7-7� � � � � � � � � � �

7.1.6. Outline Drawing of the Display Unit NWZ-164

Figure 7.6 Outline Drawing of the Display Unit NWZ-164

DISPLAY AREA

DIS

PLA

Y AR

EA

1/ 6

-�7

(HO

LE F

OR

IN

STA

LLAT

ION

)

7-8� � � � � � � � � � �

7.1.7. Outline Drawing of the Operation Unit NCE-7699A

Figure 7.7 Outline Drawing of the Operation Unit NCE-7699A

(5-M

ETER

CO

NN

ECTI

ON

CAB

LE IN

CLU

DED

)

INLE

T FO

R O

PTIO

N

(PS

2)

OU

TLIN

E

DIM

EN

SIO

NS

CA

BLE

INLE

T LO

CAT

ION

TO

ATT

AC

H H

OO

K

AN

D L

OO

P FA

STE

NER

4-M

4 D

EPTH

5.8

OV

ER

TO

DIM

ENSI

ONAL

DE

VIAT

IONS

CH

AS

SIS

CO

LOR

:

N4-

EQ

UIV

ALE

NT

TEX

TUR

ED H

N20

01G

MA

SS

: APP

RO

X. 1

.3 k

g

7-9� � � � � � � � � � �

7.1.8. Outline Drawing of the Multi-function Operation Unit NCE-7729A

Figure 7.8 Outline Drawing of the Multi-function Operation Unit NCE-7729A

7-10� � � � � � � � � � �

7.1.9. Outline Drawing of the Rectifier NBA-5111 (Option)

Figure 7.9 Outline Drawing of the Rectifier NBA-5111 (Option)

7-11� � � � � � � � � � �

7.2. System Diagrams

7.2.1. Overall System Diagram of the Radar JMA-5222-7/9

Figure 7.10 Overall System Diagram of the Radar JMA-5222-7/9

7-12� � � � � � � � � � �

7.2.2. Overall System Diagram of the Radar JMA-5212-4/6/4HS/6HS

Figure 7.11 Overall System Diagram of the Radar JMA-5212-4/6/4HS/6HS

7-13� � � � � � � � � � �

7.3. Inter-Unit Connection Diagram

7.3.1. Inter-Unit Connection Diagram of the JMA-5222-7/9

11/

R1

22/

S1

33/

S2

4S

3

55/

R2

TB10

GYR

O S

YN

C/S

TEP

TB20

1LO

GP

+

2LO

GP

-3

LOG

S+

4LO

GS

-LO

G S

YN

C/P

ULS

E

TB40

1B

UZZ

+2

BU

ZZ-

BUZZ

ER

OU

TPU

T

250V

-MP

YCYS

-7

250V

-DPY

CYS

-1.5

LOG

(200

P)

GY

RO

1N

SKTX

D-

2N

SKTX

D+

3N

SKR

XD

+

4N

SKR

XD

-

5G

ND

6AL

M+

7AL

M-

8+5

V

NC

T-41

06A

NSK

UN

IT(O

PTIO

N)

SUB

KEYB

OA

RD

AIS

250V

-TTY

CS-

4

1N

MEA

RXD

+

2N

MEA

RXD

-

3N

MEA

TXD

+

4N

MEA

TXD

-

5G

ND

6EV

ENT+

7EV

ENT-

J6 RS-

422

PO

RT

OU

TPU

T

INP

UT

EVEN

T IN

PUT

1+ 1- 2+ 2- 3+, 3

-NC

D-4

380

DIS

PLA

Y U

NIT

CBD

-170

2A I/

O P

OW

ER

SUPP

LY B

OAR

D

1P1

2V

2P1

2VE

3FG

4PS

5C

ON

T1

6C

ON

T2

7KE

YTXD

-

8KE

YTXD

+

9KE

YRXD

+

10KE

YRXD

-

11+1

2V

12+1

2V

13G

ND

14G

ND

to G

PS

CFQ

-699

8

1N

SKTX

D-

2N

SKTX

D+

3N

SKR

XD

+

4N

SKR

XD

-

5G

ND

6AL

M+

7AL

M-

8+5

V

J5

1+1

2VJ3

2G

ND

3N

AVC

OM

4G

PSR

XD

+

5G

PSTX

D+

1N

CJ8 R

S232

C P

OR

T

2PC

RXD

3PC

TXD

4N

C

5G

ND

6N

C

7PC

RTS

8PC

CTS

9N

C

11AJ1 PO

WE

R IN

PUT

21A

31A

52A

62A

72A

4

+ -

RE

D

RE

D

RE

D

BLK

BLK

BLK

SHIP

S M

AIN

SD

C24

V30

0Wm

ax

CFQ

-543

6-5

(5m

JR

C S

UP

PLY)

1R

ED

2G

RN

3BL

U

4N

C

5N

C

6R

ED

-GN

D

7G

RN

-GN

D

8BL

U-G

ND

9N

C

10H

SYN

C-G

ND

11VS

YNC

-GN

D

12N

C

13H

SYN

C

14VS

YNC

15N

CSL

AVE

RG

B O

UTP

UT

1M

-J2

SUB

KE

Y-BO

AR

D

2M

-

3M

+

4M

+

52A

6G

ND

7VD

E

8+1

2V

91A

10VD

11M

TR+

12BZ

13M

TR-

14TR

GE

15TR

G

16BP

BLU

.T/G

RY

.T

PU

R.T

/BR

N.T

WH

T.T/

OR

N.T

RED

.T/G

RN

.T

BLK

.T/S

KY.

T

BLK

YEL

.T/P

NK.

T

YEL

GR

N

WH

T

OR

N

1EV

DO

2EV

DO

E

3FG

4ET

RG

O

5EB

PO

6EB

ZO

7ET

RG

OE

8EV

DI

9EV

DIE

10ET

RG

I

11+1

2V

12EB

PI

13EB

ZI

14ET

RG

IES

IMPL

YFIE

D IS

W

OU

TPU

T

INPU

T

J9 (J

5007

) opt

ion

to J

LR-1

0 / 2

0 / 3

0 / N

CT-

4106

A

(J44

06)

J9 (J

5009

) opt

ion

to N

ME

A eq

uipm

ents

BUZZ

ER

OU

TPU

T

1N

AV2

RX

D-

2N

AV2

RX

D+

3 4N

AV2

RX

D+

5N

AV2

TXD

-

6R

S232

C R

XD-

7R

S232

C R

XD+

8R

S232

C T

XD+

9R

S232

C T

XD-

J9 (J

5012

)

19-C

OR

ES

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7-14� � � � � � � � � � �

7.3.2. Inter-Unit Connection Diagram of the JMA-5212-4/6/4HS/6HS

Figure 7.13 Inter-Unit Connection Diagram of the JMA-5212-4/6/4HS/6HS

7-15� � � � � � � � � � �

7.4. Unit Internal Connection Diagrams

7.4.1. Internal Connection Diagram of the Scanner Unit NKE-2254

Figure 7.14 Internal Connection Diagram of the Scanner Unit NKE-2254

7-16� � � � � � � � � � �

7.4.2. Internal Connection Diagram of the Scanner Unit NKE-2103

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7-17� � � � � � � � � � �

7.4.3. Internal Connection Diagram of the Processor Unit NDC-1460

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Figure 7.16 Internal Connection Diagram of the Processor Unit NDC-1460

MARINE RADAREQUIPMENT

SERVICE MANUAL

JMA-5212-4/6JMA-5222-7/9JMA-5212-4HS/6HS

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Printed in Japan

Not use the asbestos

For further information,contact:

jma-5200mk2 field service manual

Documents

circuit cmj

display system

radar processing circuit

power circuit cbd

power system diagram

ais processing circuit

equipment overview

scanner unit