Sony STR-K680 - Schematic Diagram - Main Board (1;3); Main Circuitry Part 1

2222
STR-K680/K780
STR-K680/K780
3-9. SCHEMATIC DIAGRAM – MAIN BOARD (1/3) –
• See page 34 for IC Block Diagram.
19
20
23
24
No mark : FM
K680
K780
K780
K780
K780
K780
K780
K780
K780
SUB WOOFER
AUDIO
OUT
J403
R472
R471
R401
R473
C402
C452
C
431
C43
2
C433
C435
C436
C
421
C422
C423
C425
R407
C592
C472
C403
C404
R802
R780
JW301
C446
R416
C590
R591 R595
IC502
C594
R593
R594
R596
R597C593
TP1
IC400
C434
C426
J402
J400
C471
R406
CNP501
CNP502
C424
R451
R402
R403
R452
R453
R454
R404
C484
C48
2
Q471
Q560D752
1k
680
1k
2.2k
10
50V
10
50V
2
.2
50
V
2.2
50V
2.2 50V
2.2 50V
2.2 50V
4.7
50V
4.7
50V
4.7 5 0V
4.7
50V
100
0.1
0.001
0.001
220
4.7k
4.7 5 0V
1k
BOARD IN WIRE
TO TP2
M61542FP
2.2
50V
4.7
50V
100
10V
100
15P
10P
4.7
50V
1k
1k
1k
1k
1k
1k
1k
0.1
0.1
2SD2144S-TP-UVW
2SC1740S-QRT1SS133T-72
0.33
0.33
2.2k 6.8k
62k
22k
6.8k
220k
0.68
0.033
NJM4565D
JW
CC01 100P
CC51 100P
CC02 100P
CC03 100P
CC52
100P
CC53
100P
CC04 100P
CC54
100P
RELAY DRIVE
K780
C400
0.1
R469 1K
R783
47K
RY702
Ver. 1.2