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Kenwood KRF-X9992D Service Manual page 22

Audio video surround receiver
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DG
DH
(X25-6202-71) (A/7)
CN23
9
8
7
6
17V
17V
17V
+17V
+17V
+17V
16.3V
C205
IC21
0.01
IC21
(1/4)
16.3V
(3/4)
4
R211
C209
5
3.3K
47u25
7
3
6
+
2
L
BUFFER
R
IC21
(2/4)
13
9
R212
C210
-16.5V
8
3.3K
47u25
12
10
+
11
IC21
+
17V
(4/4)
-16.5V
INPUT ATT
5.6V AVR
IC83
OUT
IN
+5V
+5V
+10V
GND
5.6V
10.2V
+
+
-5.6V
-10.1V
GND
5V
5V
10V
OUT
IN
-5.6V AVR
IC82
6
5
4
3
2
1
E5
WH6
M
DI
DJ
O
P
CN24
CN29
5
4
3
2
1
1
2
3
4
5
6
7
8
9
10
11 12 13 14 15 16
17
18
W146
W115
17V
+17V
+17V
1
14
+10V
10V
WH5
N
DK
DL
B
1
2
3
4
5
6
7
8
9
R999
10K
54.4V
1/4W
14.2V
Q999
D997
+31V
+31V
7.9V
IC84
2
3
IN OUT
+8V
+8V
+8V
+13V
+
GND
1
10V AVR
Q86
9V AVR
+
+10V
21.8V
C828
10.2V
100u16
+
10.9V
R821
D89
2.7K
+B
1/4W
R805
+17V
+17V
1.8 1/4W
16.3V
C805
5.0V
330P
+
+
8
6
7
10V
10V
R808
5
17V
1K
IC81
+
(1/2)
5.0V
-10V
+
0V
3
AVR
-10.0V
2
Q85
1
4
IC81
C806
(2/2)
1000P
-10.7V
D39
-16.5V
P2
+
R806
E2
17V
17V
2.7 1/4W
+31V
+31V
DM
DN
Q451,454
POWER LIMITER
+B
-54.4V
C452
+
R471
3.3K
4.7u100
1/4W
Q454
D6
D48 D49
Q451
R473
390
B
-30.1V
1/4W
0V
-53.0V
-53.7V
R458
4.7K
Q458
R482
4.7K
Q464
1/4W
R495
22K
R457
D4
R490 18K
4.7K
Q462
Q461
C463
Q466
470u6.3
Q463
+
R469
D54
100K
R465
D53
100K
R466
D52
100K
R463
D50
100K
R998
R464
D51
10K
100K
1/4W
14.6V
+17V
CN87 CN88
12.7V
D88
+
F3
+13V
250V T1.6AL
D86
+B
Q83
F1
16.9V
250V T1.25AL
23.6V
24.2V
24.2V
CN84 CN83
D81
R823
4.7K
Q81
+20V
17.5V
20V
+
Q83
-25.2V
CN86 CN85
16V AVR
R801
3.3K
F4
250V T1.25AL
1/4W
D83
+
2.8V
R802
D84
3.3K
1/4W
-3.2V
-17.8V
R825
4.7K
Q82
-24.5V
-25.2V
-17.2V
CN82 CN81
30.1V
D82
Q84
F2
+31V
250V T1.6AL
+
DO
DP
B
+B
+
Q465
R480
22 1/4W
16.3V
C458
47u25
R478
R489
47K
+
100
15.4V
R476
0V
4.7K
Q453
+
Q453,457
POWER LIMITER
+17V
+31V
E7
WH1
9
8
7
6
1
5
4
2
3
2
1
B
+31V

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