Schematic Diagram - Dcdc Board - Sony STR-DN840 Service Manual

5-26. SCHEMATIC DIAGRAM – DCDC Board –
1 2 3
A
DCDC BOARD
B
C
D
CN941
POWER
4P
TRANSFORMER
R3 AC (Yellow) 1
N
NC 2
(MAIN)
CENTER 3
T901
R3 AC (Green) 4
(Page 47)
E
CN901
STANDBY BOARD
2P
O
CN940 STBY GND 1
STBY GND 2
(Page 47)
F
G
H
I
J
K
STR-DN840
4 5 6
L1904
10uH
C1907
100
25V
D923
D5SBA60-F
F940
L1902
3.15A 250V CL946
10uH
CL941
C907
0.047
C902 C900
0.1 6800 25V CL947
CL942
CL943
C908
0.047
F941
C1905
3.15A 250V
100
25V
L1903
10uH
C1906
100
25V
L1901
10uH
C1904
100
25V
7 8 9 10
L1909
10uH
R1928
C1937
6 15 10
22
0.1
4 3 2 1
IC1904
BD9329AEFJ-BZSE2
C1965 C1960 C1912 R1933
10 10 0.1 IC1904 4.7
9 +6V REG.
5 6 7 8
0 1.6 14 2.6
R1914
1k
R1918
C1942
1k
0.001
R1919
C1922
10k
2200p
L1907
10uH
R1926
3.6 15 8 C1935
22
0.1
4 3 2 1 R1942
0
IC1902
BD9329AEFJ-BZSE2
C1966 C1961 C1910
IC1902
10 10 0.1
+3.6V REG.
R1940
9
27k
5 6 7 8
0 0.8 15 2.6
R1907
1k
R1915
R1965
7.5k
10k
C1915
3300p
L1908
10uH
R1927
2 15 7
C1936
22
0.1
4 3 2 1
R1945
0
IC1903
BD9329AEFJ-BZSE2
C1967 C1962 C1911
IC1903
10 10 0.1
R1943
+2V REG.
9
22k
5 6 7 8
0.8 1.4 15 2.6
R1911
1k
R1916
7.5k
R1944
18k
C1916
3300p
L1906
10uH
R1925
C1934
22
3.7 15 8.3 0.1
4 3 2 1
IC1901
BD9329AEFJ-BZSE2
IC1901
+DCDC_NW REG.
C1969 C1964 C1909
R1905 9
10 10 0.1 1k
5 6 7 8
0.8 1.6 15 2.6
R1913
7.5k
C1914
3300p
45 45
11 12 13
R1948
0
C1947
R1946
C1951 C1971 C1957
100
68k
22 22 0.1
10V
CN1901
R1947
12k 11P
1 +6V
CL949
2 NC
W1900
3 +6V
4 +DCDC_NW
CL950
5 +DCDC_NW
6 +3.6V
CL909
7 +3.6V
8 +2V
CL910
9 +2V
10 +2.5V
CL911
11 +2.5V
C1945
C1949 C1972 C1955
100
22 22 0.1
10V
C1946
C1952 C1973 C1956
100
22 22 0.1
10V
R1939
0
C1944
R1937 C1948 C1975 C1954
100
27k 22 22 0.1
10V
R1938
6.8k
R1964
1.8k
STR-DN840
14 15 16 17
DIGITAL
BOARD
F
(3/8)
CN1501
(Page 30)