Schematic Diagram - Kenwood KRF-V7771D Service Manual

AE AF
PC BOARD(Component side view)
X25-6202-70 A/7 (J70-1292-11)
1
C22
Rch
R
5 8
4 1
PHONO
Lch
C21
L
PHONO EQ
1
CN21
2
W16
+17V
W17
-17V
CN22 1
W7 DATA
CLK C213
W8
15
3 IC23
14
C214
W10
GND
W11
-17V
W12
-5V
+17V
W13 IC82
Lch
W14
GND
O
C814
R226
CN26
R225
4 1
4
X25 B/7
4 1
CN27
R159 R154 R155
PLAY
IN
C119
E B
R114 R157
R110
C121
16
5 R112
C120
REC
W185
OUT
R113 C122 1
R150 R151
R914 C152 R103
W189
R146 R147
C115 R149
PLAY
IN R104
E B
C116 R106
16
C117
R107
W188
W191
REC
1
OUT
Y SELECTOR
C118
R518 R519
C153
R515
C123
6 PLAY R115
R118
E B
IN
C124
R120 16
R916 C154
C125
R119
PLAY
1
W194
IN
Q15 Q30
C126
B E
C129
E B
R101 R132
R143
R131 R136
R125
R184
MONITOR B E
B E
R135
OUT
R102
W313
C143
7
21
AG AH
C831
Q85
R828
E B
D87
IC1
CN29
9 1
W90
W256
R221
W91
W37
C208
W92
W290
W93 E B E B
W94
W133
W95
W55
W96 CN24
W56
15 W97 1
W57
W100
W49 R-ch
W102 W119 W130 L-ch
R204 W50 W103
W120 W144
W51
B E B E
W116 W137
E B E B
W52
R208
R209 Q401 Q352
W53
E B C401 E B
R210 R203
R218 C403 C356
C402 R402 C354
R217
R403 R356
R415
E B E B
E B
Q402 Q354
E B R405 R360
C405
C404 C358
R220 R404 R358
W302
W303 R364
C554 R407 C553
CN28 C413
C406 C407 C362
Q403 Q356
20 1 4 E B E
B
R413
W47
D41 C410 R409 D36 C370
W48
W24 R408 C411 R366
Q404 Q358
C209 R412
R213 B E B E
W124
C201 C408 C366
R201
Q360
Q405
7 1
28
C368
Lch R414 E B R378
W68
D38
W69 +17V
D42
IC21
GND
W70
R411
W71 -17V
1
8 14 R410
W72 Rch
R202 C202
C409
W138
W73 W139
W26
C210
W74
W114
R214
W75
C813
VIDEO AVR
W42
+5V W317
E2 WH5
I IC83
O G
13 1
VGND C815
I G W41
W39
W316
W315
W286
C817 CN25
W40
C816
13 1
13 1
C SELECTOR W213 CN11
D92
W289
W214
W255 R522
W6
R521 R520
W215
IC53
E B W299
W216 18 10
R152
R156 W200 W217
W218 W300
9
9
W219 1 W117
C130
W220
WH4
E18
8
GND 11 1
W221
W206
W222 +5V
B E
W207
W243
+5V
C141 E B
1
Q11 R924 R925
W223 C908
W271
W224 IC91
C142
E B
8 1
R144 W225
W198
R904 R903 C906 C903
R148 W226
7
C901
9
W227 10
W228
R122 C150
R923
W229
C909
8 C905
1
C503 W230
W231
R514
W232
IC13
Q51
R512
W233
16 9
C504
W234
E B C149
R516
W199 1
W235 R130
8
W236
9
R162 C136
W237 1
15
V-B SELECTOR
W238
W273
R511
8
C522 E B Q54
W239
W274
V-A
W241
SELECTOR E B
E B Q53
W266
B E
R510
W265
W248 4
1
VIDEO
W244 R509
AMP.
W249
8 5
W245
IC52
W298 W250
AI AJ
W154
W153
B E B E
Q83
C829
Q86 R824
D89
R801
K1 E
B
R821
Q81
E B D83
W146
C828
C811
R462
C809
W115
VIDEO AVR
D85
W170
+17V
W171
R809 W202
W151
W203
A-CLASS
18
W168
W292 W204
SL-ch
SR-ch C-ch
W205
W143 W179 W186
W165
+B
W166 W180 W187
C457
B E B E B E
W160 W174 W184
Q351 Q301 W254 D48
Q302
C301 D6
C351
C352 E B E B C302 E B
C355 C306
R354 C353 R353 C304 R304 C305 C303 Q454
D79
B E
R303
R355 R306 R305
R379 R330 R491
R380 E B E B E B R329
D5
Q353 Q304 Q303 R489
R359 R310 R309 C309
C360 C310 R476
C357 C359 C308 C307 R457
R357 R308 R307 B E
R314 Q458
C552 R363 C551 C550 R313
C375 C325
C376 C326 E
B
C364 C361 C363 C312 C314 C311 C313
Q355 E B
Q306
E B E B E
B Q463
R376 R375 R326 Q305 R325
E
B
R368 D35 C369 R367 D32 C320 R318 D31 C319 R317
D77
C372 R365 C371 R316 C322 R315 C321 E B
Q357 Q308 Q307 D4
R374 B E R373 B E R324 B E R323
D76
B E
W149 W169 W181 W193
C365 C316 C315 Q470
Q359 Q310 Q309
W312 B E
C318
C367 C317 D80
E B R377 E B R328 E B R327 E B
B E E B
D37 D34 D33
Q460
R372 R371 R322 W182
D46
R319
R370 R369 R320
C456
W183
W161 W176
W162 W177
A-CLASS AVR
29
9
C462
C463
1
X25 D/7
X25 E/7
C515 R523
PLAY
IN
C511
REC
C516
OUT
R524
9
PLAY C517
IN R525
1
1 W2
C518
REC
OUT
R526
7
PLAY
C519
IN
1
R527
PLAY C149
IN
R172
15
C501
A
R528 W1
C147
B
R173
22
AK AL
AUDIO
AVR
B E
Q84
W275
Q82
E
B R806 W280
5
4
R825
D86
R804
C802
8 R802
C801
1
C810
D84
W208 D999
R812 -17V CN23
W305
W157
1 9
W158
R468
R480
F3 T1.6V L 250V
9
R467 R478
D49
R475
CN88 CN87
R482
C822
E B
R495
Q464 E B
1
B E
R496
R471
D88
Q465
Q466 W261
B E
B E R473 C824
CN82
CN81
W281
W145
W287 E B
C452
W247
Q451
F2 T1.6V L 250V
C412 E
Q468
C451
R417
B E Q452
B
Q469
E B
B E R499 D82
D996 R477
B E
Q467
R498
D47 W284
R472
C826
IC84 G O I
C820
1
P2
W304
W251
C818
W301
W252
D39
CN51
DSP
W262
AVR
W263
15 1
E5
WH6
X25 C/7
ED1 E1
R652
R651
W83
W196
W190 W60 W212
W89 W276
R632
R633
1
R634 R638 R639
A1 C604
PEAK LEVEL DOLBY DIGITAL
W34 +5V
D63
WH7
R604 R637
51 80
R636
4 50 81 R635
IC61
1
E16
R613
31 100
D61
W18 GND SP-A 30 1
L2
X1
D67
R629
C606 L1
S7 R608 W81
R606
SP-A
R609
R630 C602
R615 W44 W84
W31 GND
R631 W45
W85
C608
W9 C633
+5.6V W32 W46
C613 W86
S7
C614 D68
SP-B
R607
S5
E B 1 13 MUTE
SP-B
R626
CN33 D69
E20
Refer to the schematic diagram for the value of resistors and capacitors.
AM AN
X25 F/7
9
1
R709
J3
R710
P1
X25 G/7
W178
W125
W3 W113
62
D65
D64
MPEG
THX/Re-EQ
/DTS
C609
S4
INPUT SEL.
C612 R628
C611 R627
S3
DISP. MODE