Schematic Diagram - Standby Board - Sony STR-DN1050 Service Manual

STR-DN1050
6-33. SCHEMATIC DIAGRAM – STANDBY Board –
1 2 3
A
STANDBY BOARD
B
C
>022S
DIGITAL BOARD CN940
7P
(3/12)
AC CUT 1
CN1501
PWR RELAY 3
(Page 39)
STBY 4.13V 4
D
STBYGND 5
>063S
STBYGND 6
C982 C981
DCDC BOARD
22u 22u
CN902
(Page 58)
E
F
G
H
I
J
K
STR-DN1050
4 5 6 7
R974
2.2k
IC902
R1930 C971 L910
R979
10k 0.1u
75k +3.3V REG. (STBY) 10uH
0
FB GND
2 5 4
4.2
IC902
COMP SW
9 6 3 8.5
RT7237ALGSP C977
C978 EN VIN
0.1u
3.5 7 2
8.7
0.0033u
SS BOOT
R981 C980
8 1
18k 0.0033u
C979
R978
0.1u
15k C975 C976
10u 10u
AC OFF DETECT
8 9 10
FH902
F901
T3.15AL 250V
R972 R971 (EXCEPT US, CND)
12 15
8A 125V
(US, CND)
FH901
0
Q951
0.7
2PD601ART
RELAY
R973
D991
47k DRIVER
DA2J10100L RY951
T902
POWER
TRANSFORMER
D901 ~ D904
(SUB)
1SR154-400TE-25
L911
D901
0uH
C960
D902
D903
0.1u
D905
BAV70
D904
C961
0.1u
C963
C962
3300u
0.1u
16V
CL996
Q952
2PD601ART
0
C969 R961
0.6 1u 50V 10k
R963
R960
10k
4.7k
60 60
11 12 13 14
MAIN BOARD (2/4)
CNP902
4P
1 LIVE
MAIN BOARD (2/4)
T901
POWER
4 NEUTRAL
TRANSFORMER
(MAIN)
JS901
0
CNP901
3P
1 LIVE
~ AC IN
3 NEUTRAL
Note: IC902 on the STANDBY board cannot exchange with
single. When this part on the STANDBY board is damaged,
exchange the entire mounted board.
15 16 17
>052S
CNP920
(Page 52)
>051S
CNP930
(Page 52)
>062S
DCDC BOARD
CN941
(Page 58)