Kenwood KRF-V7771D Service Manual page 16

K L
PC BOARD(Component side view)
1
2
X08-2942-70 (J70-1250-11)
3
1 CN15
15
CN13
Q8
13
C18
Q9
R99
C42
R246
C13
R55
R69 C14
1
R105
R20
R70
R57
R58
R56 R91
R92
5
R93
4 D7 R51
31
D10 50
main u-com
30
R52 51 R73
R63
R53
R89
1 R86
C29
R103 D9
R88
R124 D8
R87
R27
R104
C31
R26 IC3
R143
R142
R106
D18
C30
1
80 R139
81
100
R158
R156
R159
X3
5
IR CONT.
14 1
R157
IC4
15 28
R155
CN19
1
11
1
6
7
17
M N
sub u-com
R74
C20 R221
IC2
R170
R220
I O R171 R218
G
R196
R173
R174 R197
C25
R175
R198
R176 R199
R179
R177
R200 R202
R228
R78
R201
R203
Q10
R195
R188
20 1
R178
R191 80
21
C26
R68
R101
R67
R102 IC5
R66
R180
R190
R81
R181 C41
R62
R184
R183
R33 40 61
R185
R182
41
R206 60 R189
R211
R193
R212 R213 R226
R214 R215
R208 R227
X2 D14
R219
R216 R233
Q11 R207
R244
R204
16 9
C35 C36
C11 G I
C34 O
C16
IC1
IC6
1 8
R48
C15
RDS
C12
R85
R83
R84
15
R82
WH3
15
1
E1
CN14
D16
O P
Format
Converter
L7
L8
R342 R338
R346 R337
R341 R335
R345
R339
R522
R521
R530
C275
60
R531 61 C273 R334
40
41 R561
R535 R532
R333
C274
1 32
C276 R562
C119
IC29
IC28
80 21
C249
C120
R540 20 C228
1
R539
R541
R354 R544
R371
R545
1 14
R547 C223
R355 R349 C250
C134
R546
R353 R351
C129 7 R372
8
C133
16 17
C222 1
6 40
C121
7 R375
39
44
C123
IC30 R369
14 8
C229
input
IC32
buffer
C248
1 7
17 29
C156 C135
C226
18 28 C137
C224
main DSP
2
C141
OSC
3
A4
C154 test
C225 C247
1 C140 4
IC36
R379
IC38
R383 R382 5 4
5
4
C155
Q31
1
8
8
1
E B
C165
Q32
E B
R404
C164
R386
C170
Q52
Q34
D33
14 8
C162
R567
C166
IC37
R564 Q33 R385
R551
C163
protection
R552
1 7
R553
C167
L40
R554 Q51
R555
3.3V AVR
R556
C168
1
18
Q R
sub DSP
R391
R395 R445
R444
R396 R415
R398
1 8
IC23 1
20 11
R393 21 10
80 R443
4 5
R416
R394
C66 IC22 R442
C67
R302 R417
IC21
C172
C179 C63
R303
R388
R414
L42
C68 C178
C72 C177
R413
R304
C64
60
61 R410
40
C70
20 1
41 R411
C283 C76
C69
C65
SYSTEM I/O
R390
C176
1
14 R309
C75
IC24 R308
8 R307 C286
7
digital
L43
SEL
R312
R563
C142
AVR C194
C279
R313
IC33 R448 R446
R315
C145 44 34
R560
R449 R447
I G O R314 1 33
R509
R507 R319
R506 R508 C287
C144 C143 R317 16 9
R370 R505
R569
IC25
C146 IC34
IC26
R504
R568
C147
I G O
R573 11 23
R500 1
12
R373 22
C148 C149 D31 C85
C153
C106
IC35
R318
C109
G
I O
C107 R311
C152
L9
codec
C150 C151 D32 C108
R374 L6
L10
R452
R421 R420 R453 R475
1
R433 R432 C206 R465 R464 R487 R486
C205 C232 C257
8 C231
R423 R422 R455 R454 R477
C183
C195
C207 C208
C233 C234 R456 R479 C259 C260
5 R425 R424 R457
4
C215 C216 C241 C242 C267 C268
C235 C236 C261
C209 C210
C189
8 R427 R426 R459 R458 R481
1
C218 C244
Q45 Q46 Q47 Q48 Q49
C188 5 4 5 4 5
4 5
8 1 8 1 8
C190 C191
5 4 5 4 5
R570 C212 R463 C238 R462 R485
R571
R406
C211 C237
R407
R405 8
C219 1 C220 C245 8 1 C246 C271 8
R441 R439 R438 R440 R473 R471 R470 R472 R495 R493
R437 R436 R469 R468 R491
CN12
L39
CN11
13 1
15
Refer to the schematic diagram for the value of resistors and capacitors.
S T
VIDEO4
INPUT
C7
C4
B
SYSTEM
CONTROL
D
C5
G
C6
P1
R324
SL16
C100
TEXT
C86
R325
14 8
IC27
R329
1
8 7
OPTICAL
C102
C104
OUTPUT
R328
R327
R320
C90
CD1
R474
C258 OPTICAL
R476
R478
R321
C262
R480
C93
Q50
4
VIDEO4
OPTICAL
1
4
C264
R484
C263
1
C272
R492 R494
R490
VIDEO3
COAXIAL
C96
R322
output
LPF
R323
VIDEO2
C97 COAXIAL