Schematic Diagram - Dcdc Board - Sony STR-DN850 Service Manual

6-38. SCHEMATIC DIAGRAM – DCDC Board –
1 2 3
A
DCDC BOARD
5A 250V
>072S
CN1907
POWER
C1950
B 2P
CL1904
TRANSFORMER
R3 Green 1
CL1901
R3 Yellow 2
(MAIN)
T901
(Page 75)
CN1905
4P
>073S
C
CL1909
STBY 10V 1
CL1910
STANDBY BOARD
STBY GND 2
CL1911
AC CUT 3
CN940
CL1912
PWR RY 4
(Page 75)
D
E
F
G
H
I
J
K
STR-DN860/DN1060
• See page 79 for IC Block Diagrams.
4 5 6
F940
D1924
D5SBA60-F
D906
L1931
SA10QA04
CL1906 2.2uH
CL1949
- +
0.22u
C1901
C1943
6800u
0.1u
25V
C1979 C1974 C1975 C1983
10u 10u 10u 0.1u
C1987
1u
D1925
L1925
SA10QA04
2.2uH
R1927
10k
14.5
CL1950
C1955 C1922 C1957 C1961
0.7
10u 10u 10u 0.1u
5.2
2.5
C1986 C1959
0.0033u
1u
L1929
2.2uH
R1937
10k
1
EN
2
14.5
CL1952 FB
C1963 C1964 C1972
C1968 0.7 3
VREG
10u 10u 0.1u
10u
5.2 4
SS
2.5
C1970
C1985
0.0033u
1u
L1914
2.2uH
C1997 C1998 C1999 C1902
10u 10u 10u 10u
CL1924
C1911 1
R1921
0.1u
10k
14.7 2
L1935
4.7uH
3
11.8
6.2 4
R1903
33k
C1990 C1991 5
CL1925
22u 22u
R1973 6
CL1926 14.3
1k
7
CL1927
0.7 8
R1901
4.7k
7 8 9 10
CL1947
9
R1932
10k
1 8 14.7 C1915 L1938
EN VIN
0.1u 4.7uH
IC1915
14.5 2 7 9.2
FB BD9D321EFJ-E2 BOOT
3 6
0.7 6 R1934
IC1915
VREG SW
47k
4 5 C1967
5.2
SS GND
+6V REG.
R1936 100p
R1933
2.5
C1977 C1978
4.7
22k
22u 22u
CL1948
C1981 C1976 R1935
0.0033u 0.001u 10k
CL1951
9
1 8 14.7
C1916 L1937
EN
VIN
0.1u
IC1906 4.7uH
2 7
9.2
FB BD9D321EFJ-E2 BOOT
3 6
4.5 R1923
IC1906
VREG SW
47k
4 5 C1969
SS
+4.5V REG. GND
R1915 100p
R1928
4.7 C1907 C1908 C1962
2.2k
22u 22u 0.1u
C1919
R1922
0.001u 10k
CL1953
9
8
14.7 C1917 L1930
VIN
IC1914 0.1u 4.7uH
7
9.2
BD9D321EFJ-E2 BOOT
6 4.5 R1924
IC1914
SW
47k
5 C1971
GND
+4.5V REG. R1926 100p
R1938 C1918
4.7 C1909 C1936 C1973
2.2k
22u 22u 0.1u
C1920
R1925
0.001u
10k
C2000 C2001 C1914
0.1u
0.1u 10u
17
16 14.7 R1916
C1934
VIN1 VIN2
10k 0.1u
15
12 L1936
VBST1 VBST2
R1909 R1910
4.7uH
14
IC1911 6.2
47k 47k
SW1 SW2
TPS54394 PWPR
13
R1902
PGND1 IC1911 PGND2
CL1930 33k
12 14.3 C1988 C1989
C1965
EN1 EN2
22u 22u 470u
+6.2V REG. CL1929
11
R1974
10V
PG1 = PG1 PG2 = PG2
1k
10 CL1928
0.7
R1911
VFB1 VFB2
10k
9 5.6
GND VREG5 R1900
C1910 4.7k
1u
L1917
2.2uH
C1992 C1993 C1994 C1995 C2002
C2003
10u 10u 10u 10u 0.1u
0.1u
CL1941
1
C1928 R1919
VIN1
0.1u
10k 2
L1934 14.7
VBST1 VBST2
2.2uH
3 IC1912
7.9
SW1
TPS542941PWPR
2.2 4
IC1912
PGND1 PGND2
CL1938 5
R1906 R1907 C1932 C1931
EN1
+2.15V REG.
47k 33k 22u 22u
CL1939 6
14.3
C1942 PG1 = PG1 PG2 = PG2
470u 7
CL1940
VFB1
10V
0.7 8
GND VREG5
R1908
10k
73 73
11 12 13 14
C1984
0.1u
W1900
FB1901 0uH
FB1902 0uH
R1976 0
R1978 0
FB1903 0uH
R1977 0
FB1904 0uH
R1979 0
FB1905 0uH
FB1906 0uH
FB1907 0uH
C1904
100u
16V
220u
10V
L1920
2.2uH
C1951 C1953 C1954 C1905
10u 10u 10u 10u
17
CL1931
1 16
C1945 14.7 R1918
R1917
VIN1 VIN2
0.1u 10k
10k 2 15
14.7 8.1
L1921
VBST1 VBST2
2.2uH
8.2 3 IC1913 14 2.5
SW1 SW2
TPS542941PWPR
2.5 4 13
PGND1 IC1913 PGND2
5 12 CL1937
C1949 C1948 CL1932 14.3
EN1 EN2
22u 22u +2.5V REG.
CL1934 6 11 CL1935
14.3
PG1 = PG1 PG2 = PG2
CL1933 7 10 0.7 CL1936
VFB1 VFB2
0.7 8 9 5.6
GND VREG5
C1944
1u
C1996
10u
17
16 14.7 R1920
C1956
VIN2
10k 0.1u
15
8 L1933
2.2uH
14
2.2
SW2
13
R1905
CL1943 10k
12 14.3
C1923 C1924
EN2
22u 22u
CL1942
11 R1975
2.2k
C1926
10
0.7 CL1944
VFB2 470u
10V
9 5.6
R1904
C1927 6.8k
1u
Note: IC1906, IC1912, IC1913, IC1914 and IC1915 on the DCDC
board cannot exchange with single. When these parts
on the DCDC board are damaged, exchange the entire
mounted board.
STR-DN860/DN1060
15 16 17
CN1906
11P
CL1913
1 AC CUT
CL1914
2 POWER RY
CL1915
STANDBY_+4.5V
3 >006S
CL1916
4 DADCDC_4.5V
CL1917 MB-1409 BOARD
5 USBDCDC_6.2V
CL1918
6 MHLDCDC_6.2V (3/18)
CL1919
7 SPARTADCDC_2.5V
CN301
CL1920
8 ADVDCDC_2.5V
(Page 47)
CL1922
9 MTKDCDC_1.9V
CL1921
10 MTKDCDC_2.2V
CL1923
11 RFDCDC_6.2V
C1935
10u
C1937
0.1u
L1919
2.2uH
C1940 C1941 R1913 R1912
22u 22u 47k 47k
C1966
R1914
470u
10k
10V