Icom IC R8500 Service Manual Addendum page 134

Apr. 2010
• MAIN-A UNIT
(TOP VIEW)
EXTERNAL SPEAKER JACK
DC IN JACK
J20
SPE 3 C144
C236
NC C235
INSPE 1
C238
L43
J14
L42
J19 R207
C221
C230
R272
R505
C227
C219
R271
L39
R278
C225
C207
R270
C226
C212
R264
C224 R277 C213
C233 R275
L38
R274
C215
C223
C210
J12
C211
Mdat 1
2 VSTB
VBSY
C273
Mck
+5
GND
GND 7
8 VOIC
L44
D35
C242
J16
R279
R281
R280
C241
J15
F1
C365
RL1
C200
D59
L51
R447
C149 R210
C151
R447
Q69
R212
R446
C155
IC12
R448
C148 R218
R221 R215
R226
R266 C217 Q30 R225
C322
R156
C140
R383 R157
C117
C139
C203
VOICE C115
R250
Q63
Q47
R381 Q18
BEEP
R396 R247
R303
R492
R263 C113
R397
R302 R398
R153
R382 R380
C272 R298
R395
C107
IC32
R297
R151
R307
R416
R370
R424
C194
R260
R301
R305
J12 L26
R304
J12
R190
C279
UT-102
C377
L52
L48 C248 C254
C249 D66
R289
C253
C264
D40
D39
C263
C250
L45
MP10
C369 C359
C358 C357
C360
C180 C161
J5
J5
J7
23
AGC JACK
C134
C339 D18
D17
R394
C135
J32
AGC
R186
R199 R406 D54
D23
R509
C284 C28
R361
CP4
R480 C367
R362
R163
CP4
IC8
Q7
FI8 FI7
C158
R234
L27
C123
IC13
FI6 FI5 D28 R233
R507 C98 R173
Q70
CP5
FI4
CP5
R139 CP3
CP3
R139
L25
MP1
D63
OPTION CW-N
B6557D
IF OUT JACK
CI-V REMOTE CONTROL JACK
C6 R7
MP18 C7
C9
R5
C5
C309
C10
C4
L4
Q5
R504
C26
R26
R504
L2
R60
BLACK
L7
L8
CP1
CP1
C34 L54
L9
R40 C40 L10
R62
R41
C326 J1
C33
IC4 C37
FI1
C31
R527
R33
FI2
C526
C525
R529
C41
FI3B
L17
R43
R106
C72
Q12
C53
C84 Q58 R95
C83 R91
R540
R533
L23
R107 R85
D5
C82
R376
RED
C56 Q8
R78 R375
L33
L34
C373 C372
C189
C374
Q43 Q41 Q56
Q32 Q45
C165
J9
Q33 Q44 Q42 Q37 Q40 L32
Q34 C170
C362
C371 C370
C361
J8
J6
J6 J8
RS-232C CONNECTOR
J23
C267 C266
R494
L14 C268 C269
R516
R517
R294
R518
R358
R352
C265
D43
C193 R471 R470
R469
R468
FI3A
L18
IC33
R520
C62
R349
C66
X3 D64
R350
C319
D29
D24
MP2
R344 C294
R348 C296
L21
R356 C300
R355 C298
R354 C299
R345 C292
R240 R346 C293
J10
R336 D46
C306
R335
C290 GND 7
Q57
MTXD
C305
MRXD
IC37
GND
GND
L+5
C191
13.8 1
L37
R359 C308