Schematic Diagram - Main Board (1/4) - Sony STR-K685 Service Manual

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4-12. SCHEMATIC DIAGRAM – MAIN BOARD (1/4) –
3 7 6 3 1 5 1 5 0
DCAC
B
BOARD
CN2001
(7pin to 9pin)
(Page 32)
J400
SAT AUDIO IN
TV AUDIO IN
SA-CD/CD AUDIO IN
T E
L 1 3 9 4 2 2 9 6 5 1 3
F
DIGITAL
BOARD
(3/5)
CNS501
(Page 20)
G
w w w
DIGITAL
BOARD
(5/5)
CNS502
(Page 22)
MAIN BOARD
20
(3/4)
(Page 27)
STR-K685
• See page 34 for IC Block Diagram.
CNP733
R401 1k
3P
R451 1k
J400
1k
6P R402
R452 1k
R403 1k
R453 1k
C484
0.1
R404
1k
R454 1k
CNP501
15P
CNP502
11P
x a o
y
. i
TP1
http://www.xiaoyu163.com
C421 C431
C432 C422
4.7 10 4.7
10
50V 50V
50V 50V C424
4.7
50V
0
0
0
0
IC400
0
M61542FP
0
0
0
ANALOG SOUND
PROCESSOR
0
0
IC B/D
-7
0.9
0.9
C402
C452
10 10
50V 50V
Q Q
3 7 6
C482 0.1
7
C403
0.001
Q471
2SD2144S -TP-UVW
+3.3V REG
3.5
C404
C472
0.001
0.1
u 1 6 3
.
25 25
http://www.xiaoyu163.com
2 4
8 9 9
C434
10
50V
0
0
0
C433
10 50V
0
C423
0
4.7
50V
0
0
0
C425
4.7
50V
0
C435
0 10 50V
C446
0 4.7 50V
C436
0 10 50V
C426
0 4.7
50V
R416
1k
0
3 1 5 1 5 0 8 9 2
C590
0.22
R471
4.3 680 R472 1k
R595 5.6k
IC502
R591
3.3k IC NJM4565D
C471
R473
100 C592
2.2k
10V 0 7
0.47
C594 0 0
0.33
0 0
-7 0
R593
47k
C593 R597
0.033
R594 220k
22k
WOOFER AMP
m
c o
STR-K685
2
8 9 9
(Page 28)
4 9 8 2 9 9
R596
5.6k
(Page 27)
(Page 26)
CNP732
3P
E
DCAC
BOARD
CN2001
(4pin to 6pin)
(Page 32)
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