Schematic Diagram - Main Board (2/4) - Sony STR-DH520 Service Manual

4-9. SCHEMATIC DIAGRAM – MAIN Board (2/4) –
1 2 3
MAIN BOARD (2/4)
SR_OUT
A
MAIN
1
BOARD
2
1
3
(1/4)
4
5
(Page 20)
6
7
B
CL400
R679
10
R678
L678
4.7 1.7uH
CL399
C670
C679 0.01
C 0.022
CL398
R670
47k
CL401
Q661
2SA1514KT146S
CURRENT DETECT
0 0
D
-1
C661
220p
R662
R661
6.2k
4.7k
E
SR +VE
Q653
MN2488-OPY-MK
B C E
1 2 3
MAIN
1 61 0
BOARD
2
8
F
(1/4)
9
C658
(Page 20)
47p
R659
100
R657
82k
R656
2.2k
G
-1
1 0.4
Q651
2SA1175-HFE
BIAS
H
IC701
STK350-630TS-E
IC701
PRE DRIVER
15 14 13
I
-61 61
10
11
12
13
14
MAIN
15
BOARD
3
(1/4)
J
(Page 20)
16
K
STR-DH520
4 5 6
FL_OUT
[SR] [FL]
CL391
R680 R730
47k
R729 47k
10
R722
R672 100k
R728 R628
100k L728 CL390
4.7 1.7uH 4.7
CL386 CL384 C729 C720
0.01
0.022 R716
68k
R666
CL383
68k
R720
R715
47k 15k
CL387 CL385
Q711
R665
2SA1514KT146S
15k
R664 R714
CURRENT DETECT
1.5k 1.5k
-1 0 0 0 -1 0
Q662
2SA1514KT146S
CURRENT DETECT
-60 -1 -60 Q712
2SA1514KT146S
C711
CURRENT DETECT
220p
R713
R663
0.22 0.22
R712
R711
6.2k
4.7k
SR -VE FL +VE FL -VE
Q654 Q703 Q704
MP1620-OPY-MK MN2488-OPY-MK MP1620-OPY-MK
B C E B C E
B C E
1 2 3 1 2 3 1 2 3
-1 -61 0 1 61 0 -1 -61 0
C659 C708
C709
47p 47p
47p
R710
R660 R709
100
100 100 R708
R658 R707
82k 560
560
R706 0.4
0.4
2.2k
Q702
Q652
2SD2144S-V
2SD2144S-V
-1
-1 BIAS -0.5 -1 BIAS
-0.5
1
0.4
Q701
C657 2SA1175-HFE
C707
BIAS
47 25V 47 25V
12 11 10 9 8 7 6 5 4 3 2 1
61 1 0 0 0 0 0 -60 -1 1
C703
C753
10p 10p
C752 C702
C755 C705
R754 R704
100p 100p
3p 3p
68k 68k
R752 R702
68k 68k
R753 R703
R751
2.2k R701
2.2k
1k
1k
C712
C762
C710
220 C760 220
10
10 10V
10V
50V
50V
[FR] [FL]
23 24
MAIN BOARD (3/4)
(Page 22)
7 8 9 10
SL_OUT
[SL]
R629 R630
10
47k
R622
100k
L628
1.7uH
C629 C620
0.022 0.01
R616
68k
CL388
R615
R620
47k 15k
Q320
Q611
2SA1514KT146S
2SA1514KT146S
PROTECTOR
CURRENT DETECT
CL389
-60
0 0 -1 0
Q612
R614
2SA1514KT146S 0
1.5k
CURRENT R320
-1 -60 0
22k
DETECT
C611
220p
R613
R321
0.22
22k
0
0
R612
R611
-60
4.7k 6.2k
Q323
2SA1514KT146S
PROTECTOR
SL +VE SL -VE
Q603 Q604
MN2488-OPY-MK MP1620-OPY-MK
B C E B C E
R327
1 2 3 1 2 3
10k
-1 -61 0
1 61 0
D326
MC2838-T112-1
C608
C609
47p
47p
R609 R610 C325
R326
100 10
100 R607 39k
R608
50V
82k 560
R606
0.4
2.2k
Q602
2SD2144S-V
BIAS
-1
-1
-0.5
1
0.4 R328
Q601
2SA1175-HFE C607 1k
47 25V
BIAS
IC601
STK350-630TS-E
IC601
PRE DRIVER
15 14 13 12 11 10 9 8 7 6 5 4 3 2
-61 61 61 1 0 0 0 0 0 -60 -1
C603
C653
10p
10p
C655 C652 C602 C605
R654 R604
3p 100p 100p 3p
68k 68k
R652 R602
R546 R545
68k 68k
R653 R603
0.47 0.47
R651
2.2k R601
2.2k
1k
1k
C612
C662
C660 C610
220 220
10
10
10V
10V
50V 50V
[SR] [SL]
25 26
6
21 21
11 12 13
SR_OUT
SL_OUT
R392 R393
FR_OUT 330 330
R394 R395
FL_OUT 330 330
HP_DET
6 5
4 3
2 1
RY375
12V
D375
DA2J10100L
Q375 15
0
2SC3052EF-T1-LEF
RELAY DRIVER
0
Q321
3.3
2SC3052EF-T1-LEF R377
R378
PROTECTOR 82
47k
C320
0
220
10V
R375
2.2k
C321
220
HP
10V 0
Q324
0
2SC3052EF-T1-LEF
PROTECTOR
3.3
D327
MC2838-T112-1
PROTECTOR
R325
6.8k
Q325
2SC2713-G
3.3
PROTECTOR
-61
-61
1
1
27 28 29 30 31 32
7
MAIN BOARD (4/4)
(Page 23)
STR-DH520
14 15 16 17
CN391
5P
CL364 HEADPHONE
1 HP DETECT
BOARD
2 NC
A
CL362
3 R-CH
CN790
4 GND
CL363 (Page 38)
5 L-CH
C322
0.1
D302
1SS367-T3SONY
(CHASSIS)
ET300
D303
1SS367-T3SONY
33 34