Schematic Diagram - Main Board (1/3) - Sony STR-DG820 Service Manual

6-7.

SCHEMATIC DIAGRAM - MAIN Board (1/3) -

1 2 3
MAIN BOARD (1/3)
A
B
JS569
JS568
JS570
R579
C
10
0
2.7
Q570
2SC3052EF-T1-LEF
AF POWER
SENSOR
R578 R678
4.7 Q561, 562 4.7
CURRENT
D
DETECT
R564 1.5k R570 22k
Q561
0 0 0
2SA1163L-TE85L
R563
0.22 5W 0
0
220p
C561
0 -35 0
Q562
2SA1163L-TE85L
4.7k
R561
JS567
E
R562 6.2k
Q553 Q554
MN2488-OPY-MK MP1620-OPY-MK
BOOSTER BOOSTER
E C B B C E
3 2 1 1 2 3
F
JS565 JS566
JS563 JS564
C558 C559
47p 47p
500V 500V
R559
R560
100
R557 R558 100
82k 560
G
JS561 R556 -0.6
2.2k
Q551, 552 -1.1
BIAS
0.5
Q552
2SC3623ATP-LK
1.1 -1.1
Q551
2SA1115TP-EF JS562
H
C557
47
25V
I
IC500
IC B/D
IC500
UPC2581V-S
POWER AMP
15 14 13 12 11 10 9 8 7 6
J
C553
33p 500V
C555
3p
500V
K
R554
68k
JS557
JS558
L
R553
2.2k
C556
220
10V
M
N
STR-DG820
• See page 48 for IC Block Diagrams.
4 5 6 7
R680 R780
47k 47k
R679 R779
10 10
0 0
2.7 2.7
Q670 Q770
2SC3052EF-T1-LEF 2SC3052EF-T1-LEF
AF POWER AF POWER
SENSOR SENSOR
R778
Q661, 662 4.7 Q761, 762
CURRENT CURRENT
DETECT DETECT
R664 1.5k R670 22k R764 1.5k R770 22k
Q661 Q761
0 0 0
2SA1163L-TE85L 2SA1163L-TE85L
R663 R763
0.22 5W 0 0.22 5W 0
0 0
C661 220p C761 220p
-35 0 -35
Q662 Q762
2SA1163L-TE85L 2SA1163L-TE85L
R661 4.7k R761 4.7k
R662 6.2k R762 6.2k
Q653 Q654 Q753 Q754
MN2488-OPY-MK MP1620-OPY-MK MN2488-OPY-MK MP1620-OPY-MK
BOOSTER BOOSTER BOOSTER BOOSTER
E C B B C E E C B B C E
3 2 1 1 2 3 3 2 1 1 2 3
C658 C659 C758 C759
47p 47p 47p 47p
500V 500V 500V 500V
R659 R759 R760
R660
100 R657 R658 100 100 R757 R758 100
82k 560 82k 560
R656 R756
2.2k 2.2k
-0.6 -0.6
Q651, 652 -1.1 Q751, 752 -1.1
BIAS BIAS
Q652 Q752
0.5 2SC3623ATP-LK 0.5 2SC3623ATP-LK
1.1 -1.1 1.1 -1.1
Q651 Q751
2SA1115TP-EF 2SA1115TP-EF
C757
C657
47
47
25V
25V
IC600
IC B/D
IC600
UPC2581V-S
POWER AMP
5 4 3 2 1 15 14 13 12 11 10 9 8 7 6 5 4 3 2
C653 C603 33p 500V
33p
500V
R555 22k
JS511
JS556
C644
10
C544 50V
JS610
10 50V
R653 2.2k
C656
C602
220
100p
10V
C651
10
50V
C551
10
R551
50V
1k JS573
8 9 10 11 12
JS606
R730
47k
R630
47k
R629 R729
10 10
0
0 2.7
2.7
Q620 Q720
2SC3052EF-T1-LEF 2SC3052EF-T1-LEF
AF POWER AF POWER
SENSOR SENSOR
R628 R728
4.7 Q611, 612 4.7 Q711, 712
CURRENT CURRENT
DETECT DETECT
R614 1.5k R620 22k R714 1.5k R720
Q611 Q711
0 0 0
2SA1163L-TE85L 2SA1163L-TE85L
R613 R713
0.22 5W 0 0.22 5W
0 0
C611
220p C711 220p
0 -35 0
Q612
2SA1163L-TE85L 2SA1163L-TE85L
R611 R711 4.7k
4.7k
R612 6.2k R712 6.2k
Q603 Q604 Q703 Q704
MN2488-OPY-MK MP1620-OPY-MK MN2488-OPY-MK MP1620-OPY-MK
BOOSTER BOOSTER BOOSTER BOOSTER
E C B B C E E C B B C
3 2 1 1 2 3 3 2 1 1 2
C608 C609 C709
C708
47p 47p 47p
500V 500V 500V 500V
R609
R610 R709 R710
100
R607 R608 100 100 R707 R708
82k 560 82k 560
JS604
R606
JS612 -0.6 R706
2.2k 2.2k
-0.6
Q601, 602 -1.1 Q701, 702
BIAS BIAS -1.1
0.5
Q602
Q702
2SC3623ATP-LK
0.5 2SC3623ATP-LK
1.1 -1.1
1.1 -1.1
Q601
2SA1115TP-EF C607 JS608
Q701
47 25V
2SA1115TP-EF
C707
47 25V
IC700
IC B/D
IC700
UPC2581V-S
POWER AMP
1 15 14 13 12 11 10 9 8 7 6 5 4 3 2
C605 C705
3p 500V C753 3p 500V
33p
R604 68k R704 68k
500V
C655 C755
3p 500V 3p 500V
R654 68k R754 68k
R605
22k JS712
C744
10 50V
JS711 JS710
R603 2.2k R753 2.2k R703 2.2k
C606 C756
C702
220 220
100p
10V
10V
C601 C751 C701
10 10 10
50V 50V 50V
JR632 0
2 MAIN
BOARD
(2/3)
(Page 22)
21 21
13 14 15 16
R880 R830
47k
R879 R829
10 10
0
2.7 2.7
Q870 Q820
2SC3052EF-T1-LEF 2SC3052EF-T1-LEF
AF POWER AF POWER
SENSOR SENSOR
R878 R828
4.7 Q861, 862 4.7 Q811, 812
CURRENT CURRENT
DETECT DETECT
22k R864 1.5k R870 22k R814 1.5k
Q861 Q811
0 0 0 0
2SA1163L-TE85L 2SA1163L-TE85L
R863 R813
0 0.22 5W 0 0.22 5W
0 0
C811 220p
C861 220p
-35 0 -35 0
Q712 Q862
2SA1163L-TE85L
R861 4.7k R811 4.7k
R862 6.2k R812 6.2k
Q853 Q854 Q803
MN2488-OPY-MK MP1620-OPY-MK MN2488-OPY-MK MP1620-OPY-MK
BOOSTER BOOSTER BOOSTER
E E C B B C E E C B
3 3 2 1 1 2 3 3 2 1
C858 C859 C808
47p 47p 47p 47p
500V 500V 500V
R859 R860 R809
100 100 R857 R858 100 100 R807
82k 560 82k
R856
R806
2.2k 2.2k
-0.6 -0.6
Q851, 852 Q801, 802
BIAS -1 BIAS
Q852 Q802
0.4 2SC3623ATP-LK 0.5 2SC3623ATP-LK
1.1 -1 1.1 -1.1
C807
Q851 Q801
47 25V
2SA1115TP-EF 2SA1115TP-EF
C857
47
25V
IC800
IC B/D
IC800
UPC2581V-S
POWER AMP
1 15 14 13 12 11 10 9 8 7 6 5 4 3
C805
C853 3p 500V
33p
500V R804
C855
3p 500V
R854
R705 22k
C546 C545 C844
10 10
100V 100V 50V
R853 2.2k R803 2.2k
C706 C856
C802
220 220
100p
10V
10V
C851 C801
10 10
50V 50V
STR-DG820
17 18
70
71
72
73
74
75
76
1
77
78
MAIN
BOARD
79
(3/3)
80
(Page 23)
81
82
47k
83
84
0
R820 22k
0
0
-35
Q812
2SA1163L-TE85L
Q804
BOOSTER
B C E
1 2 3
C809
47p
500V
R810
R545
R808 100 1
560
-1.1
2 1
68k
68k
R546
1
R805
22k
10
C806
220
10V