Icom IC-4088SR Service Manual - Section 9
SECTION 9
BOARD LAYOUTS
9-1 MAIN UNIT
•
TOP VIEW
9 - 1
J303
J301
C377
C345
R397
Q314
Q315
C373
R395
C359
Q306
R368
C363
C354
C343
R376
D305
D313
D314
D310
CL
W305
R420
C355
C357
R426
J302
C369
S305
R400
C380
C379
R402
R387
R393
C366
C372
C360
SP+
1
C375
R399
Q310
Q309
R386
C376
Q317
R389
D317
R419
R409
R417
C384
C319
C323
B6003A
TEST
C333
R328
R418
R331
C315
IC303
IC302
C312
Q318
R347
D301
C328
Q303
R330
R362
Q304
C304
C330
R345
C327
R329
W300
C331
R360
C340
IC300
R423
C317
R394
Q307
C324
J300
C344
C348
D308
Q312
R382
R383
R373
C389
C364
J300
D318
R396
C367
R406
C356
C347
R374
R365
C361
R384
R392
IC305
C358
R385
S304
Q313
R388
R357
C335
C339
R366
R433
R378
C346
IC304
R358
R432
R361
C401
R381
C351
C337
C334
R308
R307
C390
C398
R431
R428
C329
C399
R430
C397
SP
R301
R300
R332
C314
R375
R346
R348
R356
C336
R359
R344
C332
C320
J300
to the RF unit J2
1
10
20
11
UNLK
PLCK
D
ATA
PLSTB
D
ASTB
DA
C
K
GND
SHIFT
T+3
T+3
+3V
MTX-00
PSC
VCC
GND
GND
MOD
AF
R+3
SQLIN
SENS