
4-26
VHF PCB 8486062B14
1
2
3
B501
C407
C408
C409
C410
C411
C414
C415
C416
C419
C420
C421
C422
C430
C431
C433
C434
C435
C436
C437
C440
C442
C445
C446
C447
C448
C449
C450
C451
C452
C453
C456
C458
C459
C463
C466
C474
C475
C476
C477
C478
C479
C481
C483
C484
C503
C535
C3211
C3218
C3219
C3220
C3221
C3222
C3223
C3224
C3226
C3227
C3228
C3229
C3230
C3231 C3232 C3233 C3234
C3235
C3236
C3237
C3238
C3239
C3240
C3241
C3242
C3243
C3244
C3301
C3302 C3303
C3304
C3305
C3315
C3316
C3317
C3321
C3322 C3323 C3324
C3325
C3326
C3336
C3337
C3339
C3506
C3507
C3508
C3509
C3515
C3516
C3526
C3560
C3561
C3562
C3563
C3564
C3565
C3566
C3567
C3568
C3569
C3570
C3571
C3701
C3702
C3703
C3704
C3705
C3707
C3708
C3709
C3725
C3726
C3727
C3731
C3732
C3733
C3734
C3735
C3751
C3755
C3761
C3762
C3763
C3801
C3802
C3803
C3804
C3805
C3806
C3808
C3809
C3810
C3811
C3812
C3813
C3815
C3816
C3818
C3821
C3823
C3827
C4020
C4021
CR411
CR501
CR3301
CR3302
D3301
D3701
D3702
D3761
E400
E401
E402
E403
E404
E405
E406
F501
3
FL401
H3501
2
3
4
1
J3501
J3502
L410
L411
L505
L3221
L3301
L3303
L3308
L3519
L3523
L3701
L3731
L3801
L3809
L3811
L3812
L3813
L3816
L3826
M100
M101
M300
M301
M400
M401
4
3
Q410
Q416
Q3301
Q3561
Q3801
R400
R409
R411
R413
R414
R415
R419
R420
R423
R424
R425
R426
R431
R432
R434
R436
R445
R449
R457
R460
R461
R462
R463
R471
R472
R473
R475
R498
R499
R3219
R3220
R3221
R3222
R3223
R3224
R3301
R3303
R3304
R3305
R3306
R3307
R3314
R3315
R3319
R3320
R3324
R3519
R3561
R3562
R3563
R3564
R3565
R3566
R3569
R3570
R3571
R3572
R3573
R3702
R3703
R3704
R3705
R3726
R3727
R3760
R3761
R3762
R3763
R3801
R3802
R3803
R3804
R3805R3806
R3807
R3808
R3811
R3812
R3816
R3817
R3818
R3824
R3825
R3826
R3829
R3830
R3831
R3832
RT3301
2
C
8
C
4
S501
4
5
3
2
S502
SH402
SH403
SH3202
SH3301
SH3702
SH3802
TP3502
1
37
25
13
1
76
51
26
U410
11
1
20
10
1
37
25
13
1
17
9
25
U3503
1
37
25
13
11
1
20
10
VR432
VR433
VR439
VR441
VR442
VR448
VR506
2
3
4
Y3762
1
2
1
1
3
4
6
U3701
FRACN
Synthesizer
U404
ASFIC
U409
Microprocessor
U420
Audio Pa
U3502
Power
Control
IC
U3220
LVZIF
U3801
VCO
Buffer
1
1
ZWG0130073-D
ZWG0130073-D
VHF (136-174 MHz) Main Board Bottom Side
Summary of Contents for GP1280 Series
Page 1: ...Professional Radio GP Series VHF 136 174MHz Service Information Issue November 2004 ...
Page 24: ...2 14 THEORY OF OPERATION ...
Page 34: ...3 10 TROUBLESHOOTING CHARTS ...
Page 38: ...4 4 VHF PCB SCHEMATICS PARTS LISTS ...
Page 50: ...4 16 VHF PCB 8486062B12 Parts List Intentionally Left Blank ...
Page 54: ...4 20 VHF PCB 8486101B09 Schematics GP1280 Intentionally Left Blank ...
Page 64: ...4 30 VHF PCB 8486062B14 Parts List Intentionally Left Blank ...
Page 108: ...4 74 VHF PCB 8486473Z04 Radio Parts List Intentionally Left Blank ...