Schematic Diagram - Main Board (2/3) - Sony STR-DG820 Service Manual

STR-DG820
6-8.

SCHEMATIC DIAGRAM - MAIN Board (2/3) -

1 2 3
A
MAIN BOARD (2/3)
C449 100p
CNP410
13P
R450
1k
C450 100p
1
VOL IC CLK
B
2
VOL IC DATA
R449 1k
3
VACS CTRL
4
PROTECTOR
A 5
+7V
6
-7V
DIGITAL 7
FR OUT
AUDIO
BOARD 8
AGND
(2/2)
9
CN2222 FL OUT
C
(Page
10
SW
35)
11
AGND
12
C OUT
13
SR OUT
CNP411
15P
D
AGND 1
SL OUT 2
+7V 3
SBR OUT 4
SBL OUT 5
B
L IN 6
7
AGND
DIGITAL
8
R IN
E
AUDIO
BOARD 9
TUNER R
(2/2)
10
CN2223 AGND
(Page
11
TUNER L
35)
12
DMPORT L-
DMPORT R- 13
JS3037
DMPORT L+ 14
DMPORT R+ 15
F
CNP432
6P
MIC MONO 6
C
MIC_GND 5
VIDEO2-AU_R 4
FRONT
A-GND 3
V2
BOARD
G NC 2
CN725
(Page VIDEO2-AU_L 1
43)
H
JS3002
I
IC3002
J
MIX AMP
K
STR-DG820
• See page 48 for IC Block Diagrams.
4 5 6
0.2
0.2
0
0
0
0
0
C3034
C3037
4.7
1
50V
C430 220p
R3020
47k
R3023
C431 220p
47k
JS3022
C3026
R430
0.1 JS400
1k
R431 1k
1 2 3 4
C409 C459
4.7
50V 50V
R409 R459
CC09 CC59
1k
100p 100p
8 7 6 5
C3025
0.1
R3010
47k
R3013
47k
C3024
R3012
4.7
47k
50V
C3027
1
JS3001
J401
6P
L R L
SA-CD/CD/ SA-CD/CD/
CD-R OUT CD-R IN
7 8 9 10
0
0
0 6.9
0
0 0.6
0 0.6
0 -6.8
0 0
0
0
IC400
INPUT SELECTOR,
ELECTRICAL VOLUME
IC400
BD3471KS2
0
0.2
0.2
0.2
0
0
0
0
JS409 JS410 JS411
JS459 JS460 JS461
4.7
R401 R451 R402 R452 R403 R453
1k 1k 1k 1k 1k 1k 1k
CC01 CC51 CC02 CC52
100p 100p 100p 100p
(AEP, ECE, UK)
J403
4P
(CHASSIS)
R L R L R
SAT AUDIO
TV IN
IN
22 22
11 12 13
(Page 21)
2
MAIN
BOARD
(1/3)
C487
47
25V
R487
2.2
R488
2.2
0
0
0
0
0
0
0
IC B/D
0.1
(AEP, ECE, UK)
JR434 0
JR435 0
JS408 JS458
C458
C408
4.7 4.7
50V
50V
R404 R454 R408 R458 R405 R455
1k 1k 1k 1k 1k 1k
CC54
100p
C403 C405
2200p 2200p
J404
4P
(CHASSIS) (CHASSIS)
L R L R L R
DVD AUDIO VIDEO 1 VIDEO 1
IN AUDIO OUT AUDIO IN
14 15
(US, CND)
CN434 (Page 29)
6P
1 XMR
D
3 XMGND
4 XML
XM
BOARD
5 -7V
CN102
6 +7V
97
3
98
99
MAIN
100
BOARD
(3/3)
101
(Page 23)
4
W001-002
MAIN
BOARD
(3/3)
(Page 23)