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

STR-DN1050
6-31. SCHEMATIC DIAGRAM – DCDC Board –
1 2 3
A
DCDC BOARD
B
D923
D5SBA60-F
>062S
F940
CN941
3.15A
4P
250V
POWER
CL984
C907
R3 AC (YEL) 1
0.047u
TRANSFORMER
C NC 2
CL942
CENTER TAB
(MAIN) 3
CL985
C908
R3 AC (GRN) 4
T901 0.047u
F941
3.15A
(Page 60)
250V
D
>059S
MAIN BOARD
-12V 3
(3/4)
+12V 2
E +12V 1
CN272
CN901
(Page 53)
3P
>063S
CN902
2P
STANDBY
STBY GND 1
BOARD
F
STBY GND 2
CN940
(Page 60)
G
H
I
J
K
STR-DN1050
4 5 6 7
R1909
100k
C1905
R1901
0.1u
22
1 8
3.5
L1901
BOOT SS
IC1905
CL986
10uH
10.5 2 7 7.2
RT8293ALZSP
VIN EN
C903
13.7 3 IC1905 6 1
C902
6800u SW COMP
0.1u
4 5
25V 6.1 0.8
GND +6.14V REG. FB
C904
C901
1000u
0.1u
25V R1903
10k
C1907
0.0022u
R1919
100k
C1925
R1911
0.1u
22
1 8 3.5
L1903
BOOT IC1906 SS
10uH 2 7
8.8 RT8293ALZSP 7.2
VIN EN
IC1906
13.7 3 6 1
SW COMP
4.2 4 5 0.8
+4.24V REG.
GND FB
R1913
4.7k
C1927
0.0022u
R1929
100k
C1945
R1921
0.1u
22
1 8 3.5
L1905
BOOT SS
IC1907
10uH 2 7
6.6 7.2
RT8293ALZSP
VIN EN
13.3 3 IC1907 6 1
SW COMP
2.4 4 5 0.8
+2.4V REG.
GND FB
R1923
4.7k
C1947
0.01u
8 9 10 11
L1902
10uH
R1937
100k
R1907
33k
C1981
R1931
0.1u
22
1
R1908 BOOT
IC1908
2
33k 10.6
RT8293ALZSP
VIN
13.7 3 IC1908
SW
4
6.1
+6.14V REG.
GND
R1905
4.7
R1906
10k
C1910
0.001u
W1900
L1904
10uH
R1917
47k
R1918
0
C1995
R1938
0.1u
22
1
L1909
BOOT
10uH 2
8.5
R1915
VIN
4.7
R1916 13.3 3
SW
10k
4
C1930 4.5
GND
0.001u
L1906
10uH
R1928
47k
C1964
R1945
R1925 0.1u
22
1
4.7 R1926 L1911
BOOT
10uH
22k 7.2 2
C1950 VIN
3
0.001u 13.3
SW
2.5 4
GND
58 58
12 13 14 15
L1908
10uH
R1935
8
3.5
33k
SS
7
7.2
EN
R1936
6 1
COMP 33k
5
0.8
FB
R1932 R1933
10k 4.7
R1934
10k
C1983 C1986
0.0022u 0.001u
R1944
100k L1910
10uH
R1942
8 3.5
47k
SS
IC1909
7
7.2
RT8293ALZSP
EN
R1943
IC1909 6 1
COMP 0
5
0.8
+4.5V REG.
FB
R1939 R1940
4.7k 4.7
R1941
10k
C1997 C1959
0.0022u 0.001u
R1951
100k L1912
10uH
8
3.5
SS
R1950
IC1910
7 7.2
RT8293ALZSP 47k
EN
6
IC1910 1
COMP
5 0.8
+2.5V REG.
FB
R1946 R1947
4.7k
4.7 R1948
22k
C1969
C1966
0.001u
0.01u
16 17
CN1901
8P
CL901
1 +6V(MHL)
>023S
CL997
2 +6V(USB)
CL902
3 +4.5V(NET)
DIGITAL BOARD
CL999
4 +4.24V(OTHERS)
(3/12)
5 +2.4V(DSP)
CL998
CN1501
6 +2.4V(DSP)
7 +2.5V(ADV)
(Page 39)
CL907
8 +2.5V(ADV)