Post on 01-Jan-2016
transcript
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
JMA-5212-6 6 FT SLOT ANTENNA 10kW X 27rpm CAT 2
JMA-5222-7 7 FT SLOT ANTENNA 25kW X 24rpm CAT 2
JMA-5222-9 9 FT SLOT ANTENNA 25kW X 24rpm 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-5212-6 6 FT SLOT ANTENNA 10kW X 27rpm
JMA-5222-7 7 FT SLOT ANTENNA 25kW X 24rpm
JMA-5222-9 9 FT SLOT ANTENNA 25kW X 24rpm
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
JMA-5212-6 NKE-2103-6 NJU-85 NCD-4380 DC24V
JMA-5222-7 NKE-2254-7 NJU-85 NCD-4380 DC24V
JMA-5222-9 NKE-2254-9 NJU-85 NCD-4380 DC24V
Non IMO compliance
MODEL
NUMBER SCANNER
PERFORMANCE
MONITOR UNIT
DISPLAY
SYSTEM SHIP'S MAINS
JMA-5212-4 NKE-2103-4 NJU-85 NCD-4380 DC24V
JMA-5212-6 NKE-2103-6 NJU-85 NCD-4380 DC24V
JMA-5222-7 NKE-2254-7 NJU-85 NCD-4380 DC24V
JMA-5222-9 NKE-2254-9 NJU-85 NCD-4380 DC24V
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
DC
24V
+30%
-10%
DC
24V
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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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NKE
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+30%
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164
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.
2-12� � � � � � � � � � �
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.
PIN NAME DESCRIPTION APPLICATION
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.
PIN NAME DESCRIPTION APPLICATION
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.
PIN NAME DESCRIPTION APPLICATION
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
Fuse ST6-10AN1 (5ZFCA00053)
1 3 F3 Inside processing unit
7ZXRD0015 (JMA-5222-7/9)
Name Type/Code Shape (mm) In Use Spare Parts No. Location
Fuse ST6-10AN1 (5ZFCA00053)
1 3 F2 Inside processing unit
Fuse ST6-10AN1 (5ZFCA00053)
1 3 F3 Inside processing unit
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
9-9 Cross-recessed Head Screw BSNC04010B � NC4X10Bs
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
10-14 Cross-recessed Head Screw BSNC04010B � NC4X10Bs
10-15 Cross-recessed Head Screw BSNC04016B � NC4X16Bs
10-16 Cross-recessed Head Screw BSNC03008B � NC3X8Bs
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
35 Cross-recessed Head Screw BSNC04010B � NC4X10Bs
36 Cross-recessed Head Screw BSNC03008B � NC3X8Bs
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
23 Nameplate MPNN45156
24
MTZ303980 -1/1
25
1 Bezel MTV304395
2 Cover MTV302382
3 Rubber Key 1 (Japanese) MTV303868
4 Rubber Key 2 (Japanese) MTV303869
5 Rubber Key 3 (Japanese) MTV303870
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
30 Nameplate MPNN45283
31 Nylon Clip AB-10N BRBP00012 TYTON
32 Cable Clamp FGC-5 BRBP05042 KITAGAWA-IND
33 Binding Head Screw M4X8FE ZMC Black BRTG08628 KOSHIN
34 PT Screw 1411-H2-3006 BRTG09224 JAPAN DRIVE-IT
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 �
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 � � �
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.
Ship's heading bearing
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
• A Phillips screwdriver for 5 mm screws
• Tools for removing the scanner unit covers (See Section 4.1.2.)
[Replacement procedure]
(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�
• A Phillips screwdriver for 5 mm screws�
• Single-ended wrench (width across flats 7 mm for M4 bolts)�
• Tools for removing the scanner unit covers (See Section 4.1.2.)
[Replacement procedure]
(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.
Remove the three screws.
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 five cables.
Remove the spacer.
Loosen the nine screws.
Remove the two screws.
4-10� � � � � � � � � � �
4.1.7. Power supply circuit board (CBD-1682A) replacement / NKE-2254 [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) 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.
(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 cables.
Remove the three screws.
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]
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. 4.1.8. T/R control circuit (CMC-1205R) replacement / NKE-2254 [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) 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.
Do not forget to tighten the bolts and screws, and do not forget to reconnect the cables.
Remove the five cables.
Remove the three screws.
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]
• 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)
(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.
Remove the three screws.
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]
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 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 Phillips screwdriver for 4 mm screws
• A Phillips screwdriver for 5 mm screws
• A wrench (width across flats 7 mm for M4 bolts)
• A wrench (width across flats 8 mm for M6 bolts)
• Tools for removing the scanner unit covers (See Section 4.1.2) [Replacement procedure]
(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.
(2) Loosen the screws (two M4 screws) and remove the encoder together with the metal fitting.
�
�
�
�
�
Remove the five cables.
Remove the three screws.
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]
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. 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]
• 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)
(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.
(2) Remove the cable for the fan that is connected to the T/R control circuit board.
Remove the five cables.
Remove the three screws.
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.
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. Check that the fan alarm is not triggered.�
4.1.12. Modulator fan replacement / NKE-2254 [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)
Remove the four screws.
4-19� � � � � � � � � � �
(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.
(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 five cables.
Remove the three screws.
Remove the cable.
Loosen the nine screws.
Remove the two 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.
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. Check that the fan alarm is not triggered.�
Remove the four screws.
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
[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.
Ship's heading bearing
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]
After completing the replacement work, check the operation by following the procedure below.
(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)�
• Tools for removing the scanner unit covers (See Section 4.1.2)
[Replacement procedure]
(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]
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.
4.1.16. Motor Control Power Circuit 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), and remove the transmitter-receiver unit (see Section 4.1.6).
(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.
Be sure to tighten all the bolts and screws and connect all the cables.
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]
• 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), and remove the transmitter-receiver unit (see Section 4.1.6).
(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.
Be sure to tighten all the bolts and screws and connect all the cables.
Remove the nine screws (M4).
4-27� � � � � � � � � � �
[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.�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]
• A Phillips screwdriver for 3 mm screws�
• 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), and remove the transmitter-receiver unit (see Section 4.1.6).
(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]
• A Phillips screwdriver for 4 mm screws • A Phillips screwdriver for 5 mm screws
• A single-ended wrench (width across flats 7 mm for M4 bolts)�
• Tools for removing the scanner unit covers (See Section 4.1.2.) [Replacement procedure]
(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.
Be sure to tighten all the bolts and screws and connect all the cables.
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]
• A Phillips screwdriver for 4 mm screws • A Phillips screwdriver for 5 mm screws
• A single-ended wrench (width across flats 7 mm for M4 bolts)�
• Tools for removing the scanner unit covers (See Section 4.1.2.) [Replacement procedure]
(1) Open the top cover (see Section 4.1.2), and remove the transmitter-receiver unit (see Section 4.1.6).
(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.
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. 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.
(Phillips screwdriver for 3 mm screws)
� �
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
A Phillips screwdriver for 3 mm screws
[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.
(Phillips screwdriver for 3 mm screws)
[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]
(1) Check that the equipment starts normally.
(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
A Phillips screwdriver for 3 mm screws
[Removal]
(1) Remove the top cover according to Section 4.2.2.
(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]
(1) Check that the equipment starts normally.
(2) Check that an error message is not displayed.
4-40� � � � � � � � � � �
4.2.5. Target Tracking (TT) Unit NCA-877A [Required tools]
A Phillips screwdriver for 3 mm screws
[Removal]
(1) Remove the top cover according to Section 4.2.2.
(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.
(Phillips screwdriver for 3 mm screws)
[Mounting]
(1) Assemble the unit in reverse order of removal.
[Operation check]
(1) Check that the equipment starts normally.
(2) Check that an error message is not displayed.
(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]
A Phillips screwdriver for 3 mm screws
[Removal]
(1) Remove the top cover according to Section 4.2.2.
(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.
(Phillips screwdriver for 3 mm screws)
[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.
(3) Assemble the unit in reverse order of removal.
[Operation check]
(1) Check that the equipment starts normally.
(2) Check that an error message is not displayed.
4-43� � � � � � � � � � �
4.2.7. GYRO I/F Circuit CMJ-304E [Required tools]
A Phillips screwdriver for 3 mm screws
[Removal]
(1) Remove the four screws that secure the NSK Unit
NCT-4106A cover.
(Phillips screwdriver for 3 mm screws)
(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.
(Phillips screwdriver for 3 mm screws)
[Mounting]
(1) Check that the DIP switch settings of the GYRO I/F circuit are correct.
Check the GYRO I/F circuit fuses.
(2) Assemble the unit in reverse order of removal.
(3) Start the equipment, and set the true bearing value.
[Operation check]
(1) Check that an error message is not displayed.
(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 Phillips screwdriver for 3 mm screws
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.
(Phillips screwdriver for 3 mm screws)
(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]
(1) Assemble the unit in reverse order of removal.
(2) Start the equipment, and set the true bearing value.
[Operation check]
(1) Check that an error message is not displayed.
(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)
A Phillips screwdriver for 3 mm screws
[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.
(Phillips screwdriver for 3 mm screws)
(3) Disconnect the four connectors, and
remove the rear cover.
Remove
Remove
4-48� � � � � � � � � � �
(4) Remove the 20 setscrews, and remove
the front cover.
(Phillips screwdriver for 3 mm screws)
(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]
(1) Check that the equipment starts normally.
(2) Check that an error message is not displayed.
(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]
A Phillips screwdriver for 3 mm screws
[Removal]
(1) Remove the seven setscrews, and open
the rear cover.
(Phillips screwdriver for 3 mm screws)
(2) Disconnect the two connectors, and remove
the rear cover.
(3) Remove the 2 setscrews, and replace
the PS2 connector circuit.
(Phillips screwdriver for 3 mm screws)
Remove
Remove
Remove
Remove
4-50� � � � � � � � � � �
[Mounting]
(1) Assemble the unit in reverse order of removal.
[Operation check]
(1) Check that the equipment starts normally.
(2) Check that an error message is not displayed.
(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 PS2 mouse operates normally.
4-51� � � � � � � � � � �
4.2.11. Trackball TRD-101S(BK)N1 for the Standard Operation Unit [Required tools]
A Phillips screwdriver for 3 mm screws
[Removal]
(1) Remove the seven setscrews, and open
the rear cover.
(Phillips screwdriver for 3 mm screws)
(2) Disconnect the connector from
the trackball, and replace the trackball.
[Mounting]
(1) Assemble the unit in reverse order of removal.
[Operation check]
(1) Check that the equipment starts normally.
(2) Check that an error message is not displayed.
(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.
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.
� Replace 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.
Location of cause � Procedure CPA-264 in the
scanner unit
� Check the insertion of connectors J2102 and J2103 on the
modulation circuit CPA-264.
� Replace the CPA-264.
CBD-1682A in the
scanner unit
� Check the insertion of connector J1003 on the power circuit
CBD-1682A.
Replace the CBD-1682A.
CMC-1205R in the
scanner unit
� Check the insertion of P1111 and J1103 on the CMC-1205R.
� Replace the CMC-1205R.
Cables in the scanner
unit
� Check the cables in the scanner 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.
Location of cause � Procedure CPA-264 in the
scanner unit
� Check the insertion of connectors J2102 and J2103 on the
modulation circuit CPA-264.
� Replace the CPA-264.
CMC-1205R in the
scanner unit
� Check the insertion of P1111 and J1103 on the CMC-1205R.
� Replace the CMC-1205R.
CBD-1682A in the
scanner unit
� Check the insertion of connector J1003 on the power circuit
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.
Cables in the scanner
unit
� Check the cables in the scanner 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
� Replace the CMC-1205R.
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
� Check the insertion of P1113 and J1114 on the CMC-1205R.
� 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.
� Replace the motor B101.
(The type of motor B101 varies depending on the scanner unit.)
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
Motor in the scanner
unit
� Check the cabling of the motor B101.
� Replace the motor B101.
(The type of motor B101 varies depending on the scanner unit.)
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
� Check the insertion of J13 on the CMC-1205R.
� Replace the CMC-1205R.
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
� Check the scanner equipment cables.
TB103/TB203 �Z, 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
Motor in the scanner
unit
� Check the cabling of the motor B101.
� Replace the motor B101.
(The type of motor B101 varies depending on the scanner unit.)
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
� Check the insertion of J13 on the CMC-1205R.
� Replace the CMC-1205R.
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
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
� Replace the CBD-1702A.
Equipment cable in
the scanner unit
� Check the scanner equipment cables.
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
� Replace the CMC-1205R.
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
� Replace the CBD-1682A.
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.
Power terminal board
circuit CBD-1702A in
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.
� Replace the CBD-1702A.
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).
� Replace the CBD-1702A.
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.
Location of cause � Procedure Power terminal board
circuit CBD-1702A in
the display system
� Check the CBD-1702A cable connection. J5002, J5003
� Replace the CBD-1702A.
CDC-1350 in the
display system
� Check the insertion of J4402 and J4003 on the radar processing
circuit CDC-1350.
� Replace the 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.
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.
Location of cause � Procedure Power terminal board
circuit CBD-1702A in
the display system
� Check the CBD-1702A cable connection. J5002, J5003
� Replace the CBD-1702A.
CDC-1350 in the
display system
� Check the insertion of J4402 and J4003 on the radar processing
circuit CDC-1350.
� Replace the CDC-1350.
6-16� � � � � � � � � � �
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.
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.
Location of cause � Procedure Power terminal board
circuit CBD-1702A in
the display system
� Check the CBD-1702A cable connection. J5002, J5003
� Replace the CBD-1702A.
CDC-1350 in the
display system
� Check the insertion of J4402 and J4003 on the radar processing
circuit CDC-1350.
� Replace the 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.
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.
Location of cause � Procedure Power terminal board
circuit CBD-1702A in
the display system
� Check the CBD-1702A cable connection. J5002, J5003
� Replace the CBD-1702A.
CDC-1350 in the
display system
� Check the insertion of J4402 and J4003 on the radar processing
circuit CDC-1350.
� Replace the CDC-1350.
6-17� � � � � � � � � � �
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.
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.
Location of cause � Procedure Power terminal board
circuit CBD-1702A in
the display system
� Check the CBD-1702A cable connection. J5002, J5003
� Replace the CBD-1702A.
CDC-1350 in the
display system
� Check the insertion of J4402 and J4003 on the radar processing
circuit CDC-1350.
� Replace the 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.
Power terminal board
circuit CBD-1702A in
the display system
If the NCD-4380(NCM-866) is used:
� Check the jumper cable connection of the CBD-1702A. J5006
� Replace the CBD-1702A.
If the NCD-4390 is used:
� Check the cooling fan on the CBD-1702A.
� Replace 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.
Power terminal board
circuit CBD-1702A in
the display system
� Check the CBD-1702A cable connection. J5, J5002, J5003
� Replace the CBD-1702A.
CDC-1350 in the
display system
� Check the insertion of J4402 and J4003 on the radar processing
circuit CDC-1350.
� Replace the 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.
Location of cause � Procedure Power terminal board
circuit CBD-1702A in
the display system
� Check the CBD-1702A cable connection. J5, J5002, J5003
� Replace the CBD-1702A.
CDC-1350 in the
display system
� Check the insertion of J4402 and J4003 on the radar processing
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.
Location of cause � Procedure Power terminal board
circuit CBD-1702A in
the display system
� Check the CBD-1702A cable connection. J3,J5002,J5003
� Replace the CBD-1702A.
CDC-1350 in the
display system
� Check the insertion of J4402 and J4003 on the radar processing
circuit CDC-1350.
� Check the baud rate in the initial setting menu.
� In the initial setting menu, check the receive port to be used.
� Replace the radar processing circuit (CDC-1350) in the processor unit.
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.
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.
Location of cause � Procedure Power terminal board
circuit CBD-1702A in
the display system
� Check the CBD-1702A cable connection. J3,J5002,J5003
� Replace the CBD-1702A.
CDC-1350 in the
display system
� Check the insertion of J4402 and J4003 on the radar processing
circuit CDC-1350.
� Check the baud rate in the initial setting menu.
� In the initial setting menu, check the receive port to be used.
� Replace the radar processing circuit (CDC-1350) in the processor unit.
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.
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 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.
Location of cause � Procedure Power terminal board
circuit CBD-1702A in
the display system
� Check the CBD-1702A cable connection. J5002, J5003
� Replace the CBD-1702A.
CDC-1350 in the
display system
� Check the insertion of J4402 and J4003 on the radar processing
circuit CDC-1350.
� Check the baud rate in the initial setting menu.
� In the initial setting menu, check the receive port to be used.
� Use other ship speed information (MAN, GPS, or Log).
� Replace the radar processing circuit (CDC-1350) in the processor unit.
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.
Location of cause � Procedure Power terminal board
circuit CBD-1702A in
the display system
� Check the CBD-1702A cable connection. J6,J5002,J5003
� Replace the CBD-1702A.
CDC-1350 in the
display system
� Check the insertion of J4402 and J4003 on the radar processing
circuit CDC-1350.
� Check the baud rate in the initial setting menu.
� In the initial setting menu, check the receive port to be used.
� Replace the radar processing circuit (CDC-1350) in the processor unit.
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.
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 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.
Location of cause � Procedure Power terminal board
circuit CBD-1702A in
the display system
� Check the CBD-1702A cable connection. J5002, J5003
� Replace the CBD-1702A.
CDC-1350 in the
display system
� Check the insertion of J4402 and J4003 on the radar processing
circuit CDC-1350.
� Check the baud rate in the initial setting menu.
� In the initial setting menu, check the receive port to be used.
� Replace the radar processing circuit (CDC-1350) in the processor unit.
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.
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 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.
Location of cause � Procedure Power terminal board
circuit CBD-1702A in
the display system
� Check the CBD-1702A cable connection. J5002, J5003
� Replace the CBD-1702A.
CDC-1350 in the
display system
� Check the insertion of J4402 and J4003 on the radar processing
circuit CDC-1350.
� Check the baud rate in the initial setting menu.
� In the initial setting menu, check the receive port to be used.
� Replace the radar processing circuit (CDC-1350) in the processor unit.
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.
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 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.
Location of cause � Procedure Power terminal board
circuit CBD-1702A in
the display system
� Check the CBD-1702A cable connection. J5002, J5003
� Replace the CBD-1702A.
CDC-1350 in the
display system
� Check the insertion of J4402 and J4003 on the radar processing
circuit CDC-1350.
� Check the baud rate in the initial setting menu.
� In the initial setting menu, check the receive port to be used.
� Replace the radar processing circuit (CDC-1350) in the processor unit.
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.
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 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.
Location of cause � Procedure Power terminal board
circuit CBD-1702A in
the display system
� Check the CBD-1702A cable connection. J5002, J5003
� Replace the CBD-1702A.
CDC-1350 in the
display system
� Check the insertion of J4402 and J4003 on the radar processing
circuit CDC-1350.
� Check the baud rate in the initial setting menu.
� In the initial setting menu, check the receive port to be used.
� Replace the radar processing circuit (CDC-1350) in the processor unit.
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.
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 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.
Location of cause � Procedure Power terminal board
circuit CBD-1702A in
the display system
� Check the CBD-1702A cable connection. J5002, J5003
� Replace the CBD-1702A.
CDC-1350 in the
display system
� Check the insertion of J4402 and J4003 on the radar processing
circuit CDC-1350.
� Check the baud rate in the initial setting menu.
� In the initial setting menu, check the receive port to be used.
� Replace the radar processing circuit (CDC-1350) in the processor unit.
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.
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 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.
Location of cause � Procedure Power terminal board
circuit CBD-1702A in
the display system
� Check the CBD-1702A cable connection. J5002, J5003
� Replace the CBD-1702A.
CDC-1350 in the
display system
� Check the insertion of J4402 and J4003 on the radar processing circuit
CDC-1350.
� Check the baud rate in the initial setting menu.
� In the initial setting menu, check the receive port to be used.
� Replace the radar processing circuit (CDC-1350) in the processor unit.
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/
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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
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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
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SUB
KE
Y-BO
AR
D
2M
-
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+
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+
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6G
ND
7VD
E
8+1
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91A
10VD
11M
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12BZ
13M
TR-
14TR
GE
15TR
G
16BP
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.T/G
RY
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PU
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/BR
N.T
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T.T/
OR
N.T
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RN
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NK.
T
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DO
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O
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PO
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ZO
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OE
8EV
DI
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IES
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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
CA
BLE
CFQ
-691
2-20
/30
(JR
C S
UPP
LY)
NKE
-225
4-7/
9 S
CA
NN
ER U
NIT
OR
N
GR
N
BLK
YEL
WH
T
1ET
IYJ1
2AG
ND
3EX
BP
4AG
ND
5EX
BZ
6AG
ND
9VDJ2
10VD
E
11M
TR+
12M
TR-
BLK.
T/S
KY.T
YEL.
T/P
NK.
T
BLU
.T/G
RY.
T
WH
T.T/
OR
N.T
PUR
.T/B
RN
.T
RED
.T/G
RN
.T
12AJ3
21A
12AJ4
21A
12AJ5
21A
RED
BLK
BLU
WH
T
BRN
BLK
WH
T
1LV
RJ8
2
2PM
S
3E
1PT
IJ8
1
2PT
E
3LV
R
4PM
S
To P
M
NJU
-85
PM
UN
IT (O
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N)
U V UTH
TB10
5
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Figure 7.12 Inter-Unit Connection Diagram of the JMA-5222-7/9
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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7.4.3. Internal Connection Diagram of the Processor Unit NDC-1460
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CBD-1702A POWER SUPPLY & TERMINAL BOARD CCT. PC501
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nd T
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mus
t be
fitte
d on
sh
ips
com
plia
nt to
IMO
.
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
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