Replacing the Circuit Fuse Board
3-5
3.0
Replacing the Circuit Fuse Board
In cases where the radio fails to turn on when power is applied, the circuit board fuse should always
be checked as a probable cause of the failure. The locations of the fuse for both the UHF and VHF
boards are shown in Figure 3-1. The radio must be disassembled to replace the fuses as described in
the Basic Service Manual (see Chapter 1 - Related Documents), then the circuit board separated
from the radio chassis as described in the paragraphs that follow.
Figure 3-1
VHF, UHF Band 1, and UHF Band 2 Circuit Board Fuse Location
2
S502
3
5
4
1
2
S501
C
8
C
4
J101
4
3
2
J102
C108
C132
C173
C172
CR105
H101
P100
Q111
3
4
R101
R170
R133
R172
C315
C321
C395
C313
C310
C314
C318
C380
C306
C311
C316
C317
C312
CR304
CR305
CR303
L340
L306
L307
L305
L304
R306
R307
R347
R305
SH302
C309
C307
L303
Q301
R304
R303
R340
R328
C383
C390
C346
C339
C340
C341
C342
C343
C357
C358
R344
13
25
37
1
U301
C337
C329
C347
C348
C356
L314
SH322
C336
C344
C360
C355
C361
C382
L331
R343
R350
C345
C334
C359
C327
C330
C326
C338
L330
Q302
R315
R313
R311
R312
B501
3
2
1
C503
CR306
CR501
F501
SH304
C105
C130
C138
C151
C170
C174
C123
C126
C133
C128
C135
C150
C152
C134
E101
L112
R102
R329
R109
R130
R131
R132
25
9
17
U102
1
VR439
C241
C246
C255
C281
C295
C372
C252
C242
C243
C250
C244
C245
C254
C371
C373
C378
CR241
CR242
CR243
CR251
L241
L281
L242
L251
Q310
R330
R332
R110
R112
R111
R242
R241
R251
R244
R245
R252
R254
R331
R349
SH242
U241
10
20
1
11
C201
C264
C218
C223
C224
C231
C296
C298
C202
C204
C206
C207
C208
C219
C232
C234
C258
C259
C263
C265
C293
CR203
L261
R204
R281
R202
R201
R231 R232
R233
SH202
13
25
37
1
U201
U210
3
4
U211
3
4
C277
C279
C523
C278
L505
U248
VR442
VR506
C525
C526
C527
C528
C529
C530
C531
C532
C533
C534
C535
C536
C537
C538
C539
C540
C541
C542
C543
C544
C545
C546
C547
C548
C549
C550
C551
C552
C553
C555
R509
R510
R511
Fuse
F501
VHF Board
24
B501
C431
C433
C434
C436
C437
C453
C535
C3211
C3219
C3220
C3221
C3223
C3224
C3226
C3227
C3228
C3229
C3230
C3231
C3232
C3233
C3234
C3235
C3236
C3238
C3239
C3240
C3241
C3242
C3243
C3244
C3301
C3304
C3305
C3315
C3316
C3317
C3321
C3322
C3323
C3324
C3325
C3326
C3337
C3339
C3701
C3702
C3703
C3704
C3705
C3707
C3709
C3725
C3726
C3727
C3731
C3732
C3733
C3734
C3735
C3751
C3755
C3761
C 3762
CR411
CR3301
CR3302
D3301
D3701
D3702
F501
FL401
J3501
J3502
L505
L3221
L3301
L3303
L3308
L3701
L3731
Q416
Q3301
R414
R415
R419
R420
R426
R432
R460
R462
R463
R3220
R3221
R3222
R3223
R3224
R3304
R3305
R3307
R3314
R3315
R3319
R3320
R3324
R3702
R3703
R3704
R3705
R3726
R3727
R3762
R3763
S501
SH3702
U410
U3701
VR439
VR441
VR442
VR506
Y3762
C407
C408
C414
C415
C416
C419
C420
C421
C422
C430
C435
C440
C442
C445
C484
C447
C448
C449
C451
C452
C456
C458
C459
C463
C466
C475
C476
C479
C503
C3303
C3336
C3506
C3507
C3509
C3515
C3516
C3526
C3560
C3561
C3562
C3563
C3564
R3565
C3568
C3569
C3708
C3802
C3804
C3805
C3806
C3808
C3809
C381
1
C3812
C3813
C3815
C3816
C3818
C3821
C3823
C3827
CR501
E400
E401
E402
E403
E404
E405
H3501
L410
L41
1
L3519
L3523
L3801
L3809
L3811
L3812
L3813
L3816
L3826
Q410
Q3801
R409
R41
1
R413
R423
R424
R425
R431
R445
R449
R457
R461
C483
R472
R473
R3303
R3306
R3519
R3561
R3562
R3563
R3564
R3571
R3572
R3573
R3801
R3802
R3805
R3806
R3807
R381
1
R3812
R3816
R3817
R3818
R3825
R3826
R3829
R3830
R3831
R3832
SH402
SH403
SH3202
SH3301
TP3502
U404
U409
U420
U3502
U3503
VR432
VR433
VR448
C410
C481
C3237
C3302
C3508
C3803
C3810
Q3561
R434
R436
R471
R475
R3569
R3570
R3803
R3804
R3824
S502
U3220
C3801
R3808
SH3802
U3801
R3222
E406
R400
C409
C446
C450
C3763
R3761
R3760
D3761
R3219
C3218
C3566
C447
C477
C478
C41
1
R
T3301
R3301
R3566
R3567
C3565
C3571
17
9
25
11
1
20
10
2
3
4
4
C
8
C
2
2
3
5
4
1
48
36
37
25
24
12
13
1
2
3
3
2
3
4
48
36
37
25
24
12
13
1
11
1
20
10
4
1
48
36
37
25
24
12
13
3
75
50
25
1
1
1
5
100
8
16
32
W
ARIS VHF RF Board
8486062B12D BOT
SIDE
CHECK
ONE
O.K. AS IS
O.K. AS MARKED
( )
( )
ISS.
REVISION
RLSE.
CORRECTED
AS
MARKED
ILLUSTRATOR
DATE
ENGINEER
DATE
PROGRAM
DISK
RLSE.
DWG. NO.
LETTERING SIZE:
REQUIRES:
EDITOR
DATE
CHECKER
DATE
Illustrator
RK
23/Nov/1998
ZWG0130073
B
ZWG0130073-B
2
S502
3
5
4
4
C
8
C
S501
2
J101
4
3
2
J102
C108
C132
C173
C172
CR103
CR105
H101
M100
P100
Q
111
3
4
R101
R170
R133
R172
C309
C315
C321
C395
C313
C317
C307
C310
C314
C306
C311
C380
C316
C312
C318
CR304
CR305
CR303
L340
L303
L306
L307
L304
L305
Q301
R306
R307
R340
R347
R303
R304
R305
R328
SH302
C337
C383
C390
C329
C336
C344
C345
C346
C347
C348
C334
C356
C339
C340
C341
C342
C343
C357
C360
C355
C358
C359
C361
C382
L314
L331
R343
R350
R344
SH322
13
25
37
1
U301
M301
B501
3
2
1
C327
C503
C330
C326
C338
L330
Q302
R315
R31
1
R312
R313
C130
C138
C151
C170
C123
C126
C128
C150
C152
CR306
CR501
E101
F501
L112
R102
R329
SH304
VR439
C105
C174
C133
C135
C134
R109
R130
R131
R132
25
9
17
U102
1
C241
C246
C255
C281
C295
C372
C371
C373
C378
C242
C243
C250
C244
C245
C252
C254
CR241
CR242
CR243
CR251
L241
L251
L281
L242
M300
Q310
R330
R332
R110
R112
R111
R349
R242
R241
R244
R245
R251
R252
R254
R331
SH242
U241
10
20
1
11
C201
C264
C218
C223
C224
C231
C296
C298
C202
C265
C204
C206
C207
C208
C219
C232
C234
C258
C259
C263
C293
CR203
L261
R204
R281
R202
R201
R231
R232
R233
SH202
13
25
37
1
U201
U210
3
4
U21
1
3
4
C277
C215
C279
C522
C523
C278
L505
M101
R205
U248
VR441
VR442
VR506
Y201
4
3
2
C525
C526
C527
C528
C529
C530
C531
C532
C533
C534
C535
C536
C537
C538
C539
C540
C541
C542
C543
C544
C545
C546
C547
C548
C549
C550
C551
C552
C553
C555
R509
R510
R511
1
Back Metal
Issue:
Revision Detail:
Release Date:
ILLUSTRATOR
REGION
DATE
Application :
MEDIA & COMMUNICATIONS DEPT.
DWG. NO.
EDITOR
DATE
Adobe Illustrator 7.0
Aoba CONV. MDC UHF2
PCB 8404102G01-O
Ramesh R.
25/08/2000
LN Chan
Penang
25/08/2000
Comments:
25/08/2000
Penang
UHF Band 1 Board
Содержание GP-688
Страница 5: ...Compact Professional Portable Radios Service Maintainability Issue July 2007 ...
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Страница 147: ...Compact Professional Portable Radios VHF 136 174MHz Service Information Issue July 2007 ...
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Страница 197: ...VHF PCB and Schematic Diagrams EPP 3 25 VHF 136 174MHz Receiver Front End Schematic Diagram 8415533H02 ...
Страница 198: ...3 26 VHF PCB and Schematic Diagrams EPP VHF 136 174MHz Receiver Back End Schematic Diagram 8415533H02 ...
Страница 199: ...VHF PCB and Schematic Diagrams EPP 3 27 VHF 136 174MHz Synthesizer Schematic Diagram 8415533H02 ...
Страница 200: ...3 28 VHF PCB and Schematic Diagrams EPP VHF 136 174MHz Voltage Controlled Oscillator Schematic Diagram 8415533H02 ...
Страница 201: ...VHF PCB and Schematic Diagrams EPP 3 29 VHF 136 174MHz Transmitter Schematic Diagram 8415533H02 ...
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