Kenwood KRF-X7775D Service Manual page 33

CH CI
(X11-3XXX-XX) (B/2)
J11
R301 5
Lch 21
4
1
2.2K
3
2
REC
R302
Rch 10
2.2K
VIDEO1
R303
Lch 29
1K
PLAY
R304
Rch 2
1K
(BOTTOM
R305
Lch 20
2
2.2K
REC
R306
Rch 11
2.2K
VIDEO2
J14
R307
Lch 28
1K
24
PLAY
R308
Rch 3
1K
R309
3
Lch 27
1K
VIDEO3
IN
R310
Rch 4
1K
J12
Lch
VIDEO2
PLAY
Rch
4
Lch
VIDEO3
IN
Rch
A
R311
Lch
22
1K
VIDEO4
IN
R312
Rch 9
1K
5
J13
R313 C353
Lch
25 2.2u50
1K
+
R314
Rch 5 SLch
1K
R315
SLch
1K
SRch
6ch
INPUT
C354
R316 2.2u50
SRch
+
1K
6 C355
R317 2.2u50
SWch
+
1K
SWch
R318
X13-A/6
Cch
-CN12
1K
3/6
Cch
K
C356
X13-A/6
-CN11 2.2u50
+
3/6
7
N
CJ CK
17V
-16.6V 29
Rch
IC21
VIEW)
ZONE
A
Lch
C510 R502
100P 10K
INPUT
C509
SELECTOR
100P
23
17.1V
29
28
27
25
+17V +17V
17V 17V
-16.6V
INPUT BUFFER Q11,12
17.1V REC MUTE
+17V
IC25 (1/2)
C351 R351
C381 R387 C401
2.2u50 470 3 8
22u50 4.7K 2.2u50
1
+
2
+
C383 R381 R389
R363 100 10u50 47 4.7K
Lch
+
C363 100P
R385 R391
4.7K 6.2K
Q11
R386 R392
Q12
4.7K 6.2K
C384 R382 R390
C364 100P
Rch
10u50 47 4.7K
R364 100
+
C382 R388 C402
6
C352 R352
7 22u50 4.7K 2.2u50
2.2u50 470
5
+
+ 4
IC25 (2/2)
17V
+17V
17V
IC26,27 -16.6V
INPUT BUFFER
+B
R353
R369
470 8
3
1 47
2 23
IC26 (1/2)
6ch IN
R365 100
SLch
SUB WOOFER
C365 100P BUFFER
+B
3 8
1
C366 100P
2
IC29 (1/2)
R366 100
R370
6 R424 4.7K
R354
7 47
470
5 8 C427 100P 17.1V
IC26 (2/2)
4 17.1V
R423 4.7K
B
R355 +B
R371
470 3 8
1 47
2 20
C423 100P
IC27 (1/2)
6ch IN R422 100
SWch
R367 4.7K
8
C367 100P 6
7
5
4
IC29 (2/2)
C368 100P
R368 100 B
6ch IN
Cch
R372
6
R356
47
7
470 5 11
IC27 (2/2)
4
+B
B B
-16.6V
CL CM
17V
-16.6V
Rch
IC22
(BOTTOM
VIEW)
ZONE
A/B
Lch
INPUT
C504 R504
SELECTOR 100P 10K
C503
100P
17.1V
+17V
17V
+17V
IC28 (1/2)
8
3
1
+ 2
17V
R403 100
-16.6V
Lch
C405 100P
IC23
(BOTTOM
IC28
VIEW)
LINE
BUFFER
C406 100P
R404 100
6
17.1V
7
Rch
5
+ 4
+17V
IC28 (2/2)
+17V
17V IC23
SELECTOR
ATT.0,-3,-6ANALOG
/DIG.SW-MIXING
C411 22u50
+
C412 22u50
+
C433 100P
C437 100P
R431 R433
1.5K 2.7K R437 4.7K
17.1V
R441 4.7K
R435 +17V
+17V
R439
4.7K 2 8
R429
1 4.7K 2 8
10
3 1
3
IC30 (1/2)
IC31 (1/2)
IC31 (2/2)
IC30 (2/2) 5
5 7
R436
7 R440 6
4.7K
6
4
4.7K
4
17V
C425 R432 R434 17V
R442 4.7K
22u50 1.5K 2.7K R438 4.7K
+ C438 100P
C434 100P
R430
10
SUB WOOFER MIX
17.1V
+17V +17V
17V 17V
16.6V
14
CN CO
17.1V
+17V
C551
4.7u50
+
C553
+B +B
4.7u50
R564 C567
+
1K 100P
R514 C514
1K 100P
IC35
(BOTTOM
VIEW)
R563
10K C554
4.7u50
C568 10u50
+
+B
+
E.VOLUME
17V
ZONE A SBL/SBR
-16.6V
C552 4.7u50
+
17V
11
13
C517
100P
R467 100K
C505 R506
100P 4.7K C518 100P
R505
4.7K
Lch
IC24
(BOTTOM
VIEW)
C516
Rch
100P
2
C515
4 100P
R428
7
100K
DIGITAL REC BUFFER
Q13,14 +6dB GAIN CONTROL
Q13 SW DRIVER
R443 R444 +17V
Q14 SW IC32 (1/2)
C463 R465
3 8
100K 100K
ON:HDCD+6dB 4.7u50 47
1
OFF:0dB 2
+
+17V
R463 4.7K
C459 100P
Q14 Q13
R451
R455
3.3K
1K
Q15
3 Q16
R456
C460
1K
100P
R464 4.7K
GAIN SW
( ON:HDCD+6dB
C464 R466
)
6
OFF:0dB
4.7u50 47
7
5
+
4
IC32 (2/2)
17.1V
+17V
17V
CP CQ
30 28 26 24 22
CN11
31 29 27 25 23 21
+17V +17V
+B
17.1V
IC36 (2/2)
8
5
R561
7
6
R555 C557
47
3.3K 22u50
+
R559 13K
GAIN SW
ON:15.2dB
( ) C559 33P
OFF:5.2dB
R553
FLAT AMP
10K
Q17
Q18
R554
10K
C560 33P
R560 13K
C558
22u50
R562
+ 2
1 47
3
4
IC36 (1/2)
-16.6V
17V
11
C413
4.7u50
+
28
29
R469
100K
8
11
C415 4.7u50
15
+
16
29 28
17.1V
TONE AMP
C471 C487
IC33(1/2)
1u50 3 8
0.068
1
+
2
Lch
R479 180K
C477 27P
C478 27P
R480 180K
6
C472
Rch
7
1u50 5
+ 4
IC33 (2/2)
C488
0.068
-16.6V
R496
1K
+17V +17V
17V 17V