STR-DG820 (serv.man2) - Sony Audio Service Manual (repair manual). Page 6

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STR-DG820
STR-DG820
6
6
2-4.  SCHEMATIC  DIAGRAM  - MAIN Board (3/3) (AEP, ECE, UK models) -
MAIN
4
(2/3)
BOARD
CN911
K
STANDBY
(Refer to page
47 on original
service manual)
(Refer to page
43 on original
service manual)
(Refer to
page 37 on
original
service
manual)
(Refer to page
44 on original
service manual)
(Refer to page
44 on original
service manual)
(Refer to page
43 on original
service manual)
BOARD
1
BOARD
MAIN
(1/3)
BOARD
CN721
E
FRONT
V2
CN7005
F
MICOM
BOARD
CN285
N
SPEAKER
BOARD
SPEAKER
P
CN286
BOARD
(2/3)
BOARD
3
MAIN
CNP203
G
VIDEO
BOARD
BOARD
CN725
H
FRONT
V2
MAIN POWER
M
T901
TRANSFORMER
TRANSFORMER
T901
J
MAIN POWER
CN914
BOARD
STANDBY
L
(Refer to page
47 on original
service manual)
(Refer to page
47 on original
service manual)
(Refer to page
47 on original
service manual)
-5.5
0.7
-6.9
7
-5.5
-4.4
-5.5
0
3.8
3.8
0
-35.1
0
0
6.3
6.4
-5.5
-35.6
-35.1
-35.9
-35.7
3.6
-35.7
16
0.5
-35.1
16
0.6
-17.1
16
-6.9
7
0.7
0
0.7
0.7
0.7
0.7
0.7
0.1
0.1
0.1
0.1
0.1
C400
2200p
RY301
50V
C471
4.7
R467
100k
RY920
2.2k
R921
1
2
3
4
5
5P
CNP920
R1 (UPPER TAP)
R1 (LOWER TAP)
R1 GND
R1 (LOWER TAP)
R1 (UPPER TAP)
39k
R326
2SC3052EF-T1-LEF
Q324
50V
10
C325
2SA1163L-TE85L
Q323
10k
R327
6.8k
470
2W
R325
2SC2713G-TE85L
Q325
2SA1163L-TE85L
Q320
2SC3052EF-T1-LEF
Q321
1k
R328
10k
R503
220k
R507
10k
R504
8
7
6
5
4
3
2
1
470k
R502
10k
R505
0.1
C500
1SR154-400TE-25
D352
0.47
C350
0.47
C352
1SR154-400TE-25
D943
0.47
C940
0.47
C941
1SR154-400TE-25
D940
2.2k
R375
RY375
RY365
2SC3052EF-T1-LEF
Q365
2.2k
R365
2SC3052EF-T1-LEF
Q360
RY360
2SC3052EF-T1-LEF
Q355
RY355
RY350
2SC3052EF-T1-LEF
Q350
2.2k
R350
RT1P241C-TP-1
Q501
1k
R355
1k
R360
R301
2.2k
MA2J1110GLS0
D360
MA2J1110GLS0
D365
MA2J1110GLS0
D920
MA2J1110GLS0
D326
MA2J1
110GLS0
D501
MA2J1110GLS0
D350
MA2J1110GLS0
D325
MA2J1110GLS0
D355
MA2J1110GLS0
D375
MA2J1
110GLS0
D320
MA2J1110GLS0
D327
MA2J1110GLS0
D301
RY370
MA2J1110GLS0
D370
2SC3052EF-T1-LEF
Q370
R370
2.2k
1
2
3
4
5
6
6P
CNP940
F1
NC
GND
F2
R4 -AC
R4 +AC
10
RR12
3P
CNP500
R371
33
R372
47
47
R367
33
R366
47
R362
33
R361
47
R357
33
R356
47
R352
33
R351
47
R377
33
R376
R302
100
R303
100
47
R922
33
R920
D5SBA20-4003
D921
~
~
C923
0.01F
71V
C922
0.01F
71V
2W
680
R393
2W
R392
680
JS510
MAZ8300GMLS0
D500
10k
R501
47k
R506
1
2
3
4
5
6
6P
CN602
1
2
3
4
4P
CN603
R511
I
O
G
KIA7807API-U/PF
IC350
1
2
3
1
2
3
47k
R373
47k
R358
47k
R363
47k
R368
47k
R353
47k
R304
47k
R378
47k
R923
J405
1
2
3
4
5
6
7
7P
CNP912
1
2
3
3P
CN941
GND (R4)
+7V (R4)
GND (R4)
10V
330
C320
10V
330
C323
20k
R320
39k
R323
1/2W
0.15
R940
16V
470
C353
81
78
84
83
80
76
77
82
74
73
70
72
79
71
75
101
98
99
100
97
W001-002
MAIN BOARD (3/3)
VCC
VEE
AF POWER PROTECTOR
Q320, 321, 323-325
RELA
Y
 DRIVE
RELA
Y
 DRIVE
RELA
Y
 DRIVE
RELA
Y
 DRIVE
RELA
Y
 DRIVE
LIMITTER SWITCH
Q500, 501
-2
-1
-1
-2
-1
-2
-1
-2
-1
-2
-1
-2
(CHASSIS)
-1
-2
CN500
4P
3
3
4
2
2
1
1
CN792
5
5P
3
4
2
1
CN350
5
9P
3
4
2
1
6
7
8
9
R
L
R
L
L
R
R
L
7
11
D
B
16
6
9
10
F
5
15
L
K
3
G
1
12
C
E
H
8
J
4
13
A
14
2
I
R2 RETURN GND
HP_GND
-15V
STBY GND
R2 GND
+15V
+15V
NC
HP DETECT
R-CH
L-CH
GND
SW_PREOUT_RY
NC
HP_DET
HP_RY
FRONT_A/B
C/SR/SBL RY
FRONT_A_RY
SBR_RY
BRIDGEABLE RY
SR
SR_GND
SBL
SBL_GND
SBR
SBR_GND
C
C_GND
SL
SL_GND
+7V
GND
-7V
NC
+15V
GND
-15V
2SC1815GR-TPE2
Q500
NJM4565M(TE2)
IC565
OVER LOAD DETECTOR
IC565
FRONT A
TB601
TB603
FRONT B
+
+
-
-
+
+
-
-
IC352
-7V REGULATOR
IC350
+7V REGULATOR
KIA7907PI
IC352
I
O
G
16V
470
C351
2SC3052EF-T1-LEF
Q375
RELAY DRIVE
16V
3300
C904
1SR154-400TE-25
D941
1SR154-400TE-25
D942
10
RR13
10
RR14
10
RR11
0.01
CC12
0.01
CC13
0.01
CC14
0.01
CC11
R466
1k
R470
47k
2SC3052EF-T1-LEF
Q301
RELAY DRIVE
AUDIO OUT
SUB WOOFER
100V
0.22
C921
2SC3052EF-T1-LEF
Q920
RELAY DRIVE
100V
0.22
C920
SPEAKERS
(Page 4)
(Page 5)
(Page 14)
(Page 5)
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