Name: JRC JMA-5204
Brand: JRC
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8.4.4 Replacement of Diode Limiter (A102/A301)

Remove the 4 screws fixing the receiver. Remove the 4 screws fixing the diode and the limiter, and remove

diode limiter. When mounting the diode limiter, take care of the mounting direction and mount it in the arrow

direction facing it the receiver front end.

Connect the wiring in the same way as before the replacement.

Preface7
Before Operation8
Precautions9
The Mounting Point of the Warning Label18
Equipment Appearance22
Table of Contents25
Glossary34
General and Equipment Composition43
Functions44
Function of this System44
Features45
Configuration47
Exterior Drawings49
General System Diagrams61
Screen Display and Operation Panel67
Example of Display68
Names and Functions of Control Panel Keys69
Functions of Software Buttons74
Functions of Software Buttons75
Software Buttons for Area 1 (Top-Left Corner of the Radar Display)75
Software Buttons for Area 2 (Bottom-Left Corner of the Radar Display)77
Software Buttons for Area 3 (Top-Right Corner of the Radar Display)79
Software Buttons for Area 4 (Bottom-Right Corner of the Radar Display)81
Software Buttons for Area 5 (Own Ship Information Area) (Right Side of the Radar Display)82
Software Buttons for Area 6 (Other Ship Information Area) (Right Side of the Radar Display)83
Software Buttons for Area 7 (Panel Display Area) (Right Side of the Radar Display)86
Software Buttons for Area 8 (Operation and Message Area) (Right Side of the Radar Display)87
Basic Operation89
Flow Operation90
Power on and Start the System91
Observe and Adjust Video92
Acquire and Measure Data93
Display and Measure with Reference to CCRP93
End the Operation and Stop the System94
Menu Composition95
Overview of Menu Structure95
Basic Menu Operation96
Preparation98
Adjust Display Brilliance [BRILL]98
Adjust Contrast98
Adjust Operation Panel Brilliance [PANEL]99
Switch Day/Night Mode [DAY/NIGHT]99
Adjust Brilliance of Information on Radar Display (Brilliance Setting)100
Adjust Sound Volume (Buzzer Volume)101
Reset Alarm Buzzer [ALARM ACK]101
Set Display Color102
Basic Operations104
Start Transmission [TX/PRF]104
Stop Transmission [STBY]104
Change Range (Observation Range Scale) [RANGE+/-]104
Tune105
Control Sensitivity [GAIN/PL]106
Suppress Sea Clutter [AUTO-SEA]107
Suppress Rain/Snow Clutter [AUTO-RAIN]109
Reject Radar Interference [IR]111
Hide/Display Range Rings (RINGS)112
Hide Ship's Heading Line (HL OFF)112
Hide Graphics Information on Radar Display (Graphic Display)113
General Operations114
Move Cross Cursor Mark by Trackball114
Use Ebls (Electronic Bearing Lines) [EBL1/2]115
Set EBL Operation (EBL1 /2 Setting)118
Display Variable Range Markers [VRM1/VRM2]121
Display Parallel Cursors (Parallel Cursor)123
Display Parallel Index Lines (Parallel Index Line)130
Switch Bearing Display Mode [AZI MODE]137
Switch True/Relative Motion Display Mode [TM/RM]138
Move Own Ship's Display Position [OFF CENT]139
Display Radar Trails (Other Ships' Trails) [TRAILS]140
Switch Pulse Length (GAIN/PL)143
Expand Targets (Target Enhance)144
Use Video Process (Process)145
Zoom146
Use Marker [MOB]147
Marking [MARK]148
Operate EBL Maneuver Function (EBL Maneuver)149
Operate Multi-Function Control [MULTI]151
Operate User Key Switches [User Key 1/2]153
Automatic Acquisition155
Radar Alarm (Radar Alarm)158
Use Own Ship's Track Data (Own Track)163
Display Own Ship's Track (Display Own Track)163
Set Own Ship's Track Data Storage Interval (Own Track Interval)165
Cancel Storing of Own Ship's Track Data (Own Track Memory)166
Clear Own Ship's Track Data (Clear Own Track)167
Display Charts168
Insert/Remove a Card168
Display Coastline ROM Card Produced by JRC170
Display ERC Card171
Fill Charts (Fill Land Area)172
Display Navigation Information (Nav Information Display)173
Display Waypoint Marks (Waypoint Display)173
Display Navigation Information (NAV Display Setting)174
Create/Edit Navigation Information (Edit User Map)175
Set Navigation Information (User Map Setting)181
Set and Display Geodetic System188
Applied Operations190
Set Radar Signal Processing (Process Setting)190
Set Radar Trails (RADAR Trails Setting)193
Set Cursor (Cursor Setting)198
Set Screen(Screen Setting)200
Set Scanner (TXRX Setting)210
Set Chart Display (Map Setting)212
Set LORAN C (LORAN C Correction)224
Use Function Switch [Func]225
Operation Procedure225
Function Setting Menu Items226
Overview of Function Operations227
Overview of Stored Function Setting Data231
Personal Information (PIN Setting)232
Using Card235
Save in and Transfer to Card (MEM Capa/Copy)236
Erase/Initialize Card Memory (CLR MEM/INIT Card)241
Measurement of Range and Bearing243
Measurement Using the Cursor with the Trackball244
Measurement by Range Rings245
Measurement by Ebls and Vrms246
Measurement between Two Optional Points247
Operation of Tt and Ais249
Preparation251
Collision Avoidance252
Definitions of Symbols255
TT Data Display259
Cursor Modes (Cursor)261
Setting Collision Decision Criteria (CPA/TCPA Limit)262
Setting CPA Ring (CPA Ring)263
Setting Vectors (Vector Time)264
Setting the GPS Antenna Location265
Tt Operation266
Acquiring Target [ACQ]267
Canceling Unwanted Targets270
Tracking Target Data Display [TGT DATA]271
Displaying Target ID No. (Target Number Display)273
Input of Target Information (TT Individual Setting)274
Reference Target (Reference)277
TT Test Menu279
Ais Operation285
Restrictions285
Initial Setting286
Setting AIS Display Function (AIS Function)288
Activating AIS Targets (Activate AIS)289
Deactivating AIS Targets (Deactivate AIS)290
Displaying Numeric Data of AIS Targets (TGT DATA)291
Displaying Target ID No. (Target Number Display)296
Setting AIS Filter (AIS Filter Setting)297
Conditions for Deciding AIS Target to be Lost301
Setting AIS Alarm (AIS Alarm Setting)302
Target Association Assessment (Association Setting)303
Target Association Assessment303
Priority304
Azimuth304
Distance305
Course305
Speed306
Hysteresis307
Non-Hysteresis308
AIS Target to be Assessed309
Alarm Display310
Track Display316
Display Past Tracks (Past Position)316
Other Ship's Tracks (Target Track Setting)317
True and False Echoes on Display323
Radar Wave with the Horizon325
Strength of Reflection from the Target327
Sea Clutter and Rain and Snow Clutter329
False Echoes333
Display of Radar Transponder (Sart)336
Settings at Installation340
How to Open the Adjust Menu341
Tuning Adjustment342
Bearing Adjustment345
Range Adjustment346
Antenna Height Setting (Antenna Hight)347
Setting of Ccrp/Antenna/Gps Antenna Position (CCRP Setting)348
Navigator Setting350
Ship Heading Equipment Setting (Heading Equipment)353
NSK Unit Setting354
True Bearing Value Setting (Set GYRO)356
MAG Compass Setting357
Ship Speed Equipment Setting (Speed Equipment)358
Manual Speed Setting (Manual Speed)359
Current Correction (SET/DRIFT) Setting360
Settings362
Communication Port Setting (COM Port Setting)362
Baud Rate Setting363
Reception Port Setting (RX Port)365
Reception Sentence Setting (RX Sentence)366
Transmission Port Setting (TX Port)368
Sector Blank Setting (Sector Blank)370
TNI Blank Setting (TNI Blank)372
Bearing Pulse Output Adjustment (Output Pulse)374
Language Setting (Language)375
Date/Time Display Setting (Date/Time Setting)376
Adjustment377
Noise Level Adjustment (Noise Level)378
Adjustment of Target Tracking Function (TT)380
Main Bang Suppression Adjustment (MBS Level)385
Adjustment of Performance Monitor (NJU-85)387
Maintenance Menu389
Scanner Safety Switch Setting (Safety Switch)390
Initialization of Memory Area (Area Initial)391
Save of Internal Memory Data (Card2)393
Update of Character String Data (String Data Update)395
Clear of Antenna Operation Time (TXRX Time CLR)396
Update of AIS Processor Program (AIS PROC Program Update)400
Routine Maintenance402
Maintenance on each Unit403
Scanner Unit NKE-2043/2062/2063A/2103/2254403
Display Unit NCD-4380406
Performance Check408
Performance Check409
Test Menu409
Self-Diagnosis Function410
Monitor Test412
Operation Panel Test413
MON Display415
Alarm Logging417
System INFO420
Magi421
Line Monitor422
GPS Reception Status Display (GPS Status)424
Replacement of Major Parts426
Parts Expected for Periodic Replacement428
Replacement of Magnetron428
Motor Replacement449
Replacement of Diode Limiter (A102/A301)464
Replacement of Backup Battery465
Troubleshooting and After-Sales Service467
Fault Finding468
List of Alarms and Other Indications468
Operation Checking471
Fuse Checking471
Trouble Shooting472
Spares473
Special Parts476
Circuit Block to be Repaired477
After-Sales Service481
Keeping Period of Maintenance Parts481
When You Request for Repair481
Recommended Maintenance481
Disposal483
Disposal of the Unit484
Disposal of Used Batteries485
Disposal of Used Magnetron486
About the China Rohs487
Specifications489
Jma-5204 Type Radar490
Jma-5208/Hs Type Radar491
Jma-5209 Type Radar492
Jma-5212-4/6/4Hs/6Hs Type Radar493
Jma-5222-7/9 Type Radar494
Scanner (Nke-2043)495
Scanner (Nke-2062)496
Scanner (Nke-2062Hs)497
Scanner (Nke-2063A)498
Scanner (Nke-2103-4/6)499
Scanner (Nke-2103-4Hs/6Hs)500
Scanner (Nke-2254-7/9)501
Display Unit (Ncd-4380)502
Processor Unit (Ndc-1460)503
Target Tracking Unit (Nca-877A)505
Ais Unit (Nqa-2155)506
Plotter Unit507
Keyboard Unit (Nce-7699A)509
Performance Monitor (Nju-85)510
Input Enable Signal510
Output Enable Signal511
Standard Configuration511
Equipment Distance between Other Instruments512
Others (Option)512

JRC JMA-5204 User Manual

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Brand	JRC
Model	JMA-5204
Category	Marine Radar
Language	English