Schematic Diagram - Standby Dcdc Board - Sony STR-DH550 Service Manual

STR-DH550/DH750
Ver. 1.2
5-21. SCHEMATIC DIAGRAM – STANDBY DCDC Board –
1 2 3
A
STANDBY DCDC BOARD
B
D923
D3SBA60-7101
CN941
F940
4P
3.15A 250V
CL984 C907
R3 AC (YEL) 1
0.047u
C902
NC 2
0.1u 3300u 25V
CL942
CENTER TAB 3
CL985
C908
R3 AC (GRN) 4
0.047u
C
F941
3.15A 250V
D
E
F
G
H
I
J
K
STR-DH550/DH750
4 5 6 7
R1909 100k
9
C1905
R1901
0.1u
22
1 8
L1901
BOOT SS
IC1905
10uH 2 7
CL986 10.5
RT8293ALZSP
VIN EN
3 6
C1976 13.1 IC1905
SW COMP
6.1 4 5
+6V REG.
GND FB
R1919 100k
9
C1925
R1911
0.1u
22 1 8
L1903
BOOT SS
IC1906
10uH
7.8 2 7
RT8293ALZSP
VIN EN
13.1 3 IC1906 6
SW COMP
4 5
3.4
+3.3V REG.
GND FB
R1929 100k
9
C1945
R1921
0.1u
22
1 8
L1905
BOOT SS
IC1907
10uH 6.7 2 7
RT8293ALZSP
VIN EN
3 6
13.1 IC1907
SW COMP
2 4 5
+2V REG.
GND FB
C982
22u
C981
22u
R979
75k L910
10uH
IC902
FB GND
5 RT7237ALGSP 4
0.8 3.3
COMP SW
IC902
6 3
8.7 8.4 C977
C978 EN VIN
0.1u
0.0033u 1 7 +3.3V REG. 2 8
R981 SS BOOT
(STBY)
8 1
24k 0.8
R978
C979
C975 C976
0.1u 9
15k
10u 10u
DH750
8 9 10
L1902
10uH
3.6
R1907
33k
7
1 R1908
33k
0.8
R1905
R1903
4.7
R1906
C1912 C1913 C1914
10k C1909
R1930
10k 22u 22u 0.1u
0.1u
56k
C1910
C1907
0.001u
0.0022u
W1900
L1904
10uH
3.6
R1917
22k
7
1
R1918
10k
0.8
R1915
R1913
4.7
R1916 C1934
4.7k C1932 C1933
C1929
R1931
10k 22u 22u 0.1u
0.1u
56k C1930
C1927
0.001u
0.0022u
L1906
10uH
3.6
R1927
0
7
1 R1928
18k
0.8
R1925
R1923
4.7
R1926
C1952 C1953 C1954
4.7k C1949
R1932
12k
22u 22u 0.1u
0.1u
56k
C1950
C1947
0.001u
0.01u
R972
R971
15
12
R974
0 Q951
2.2k
0.8 2PD601ART
RELAY
R973 DRIVER
9
47k DA2J10100L
1 8
8.4
IC901
VO VCC
BD00GC0WEFJ-SE2
3.3 2 7
C971
FB NC_7
IC901
0.1u
0.8 3 6
GND NC_6
4 +3.3V REG. 5 8.4
NC_4 EN
(STBY)
C970
0.1u
DH550
T902
D901 ~ D904 POWER TRANSFORMER
GS1G (SUB)
D901
C960
D903 D902
0.1u
C963 D905
C962
3300u BAV70
0.1u
16V C961
D904
0.1u
CL996
0
C969 R961
Q952
1u 50V 10k
2PD601ART
0.7
AC OFF DETECT
R963 R960
10k 4.7k
36 36
11 12 13 14
ET1900
(CHASSIS)
>023S
CN1901
HDMI BOARD
12P
12 +6V
CN3513
CL902
11 +3.3V
CL901 (Page 33)
10 +2V
CL908
9 +6V
8 +6V
>019S
7 +3.3V
6 +2V
MAIN BOARD (4/7)
CL907
5 R3 12V
CL905
CN2005
4 STBY GND
CL904
3 STBY +3.3V (Page 27)
CL903
2 STOP
CL906
1 PWR RLY
BR
S901
VOLTAGE
SELECTOR
JS904 0
12
JS906 0
11
10 220V
9
r
8
7
6 OFF
5
F902
r
4
T6.3AL 250V
3
FH904 FH903
2
127V
1
CNP903
3P
1 220V(E51)/NC(BR)
F901
*1
FH901 FH902
3 120V(E51)/127V(BR)
*1
T3.15L 250V
5 240V(E51)/220V(BR)
(AEP, AUS, UK)
D906
8A 125V
RY951
CNP902
(US, CND)
4P
CL912
T4AL 250V
1 LIVE
(BR)
T6.3AL 250V
(MX, TW)
CL913
4 NEUTRAL
CNP901
3P
CL914
1 LIVE
BR
JS901
CL915
0
3 NEUTRAL
220/240V
120/127v
Note: IC902 (DH750) on the STANDBY DCDC board cannot ex-
change with single. When this part on the STANDBY DCDC
board is damaged, exchange the entire mounted board.
15 16 17
>007S
MAIN BOARD
(2/7)
CN950
(Page 25)
T901
POWER
TRANSFORMER
(MAIN)
>008S
MAIN BOARD
(2/7)
CN951
(Page 25)
~ AC IN