Standby Board, Dcdc Board - Sony STR-K990 Service Manual

STR-K990
Q Q
4-18. SCHEMATIC DIAGRAM – STANDBY BOARD, DCDC BOARD –
3 7 6 3 1 5 1 5 0
1 2 3
A
STANDBY BOARD
B
CNP802
6P
6
+15V
5
C915
R2 GND IN 2200
4
N
25V
STBY GND
3
MAIN
-15V
2 C916
BOARD 1000
C
1 25V
R2 RETURN GND
(4/4)
CN915
(Page 28)
CNP903
5P
D
+15V 1
C
STOP 2
DIGITAL
GND 3
BOARD
T E
L 1 3 9 4 2 2 9 6 5 1 3
+9V STANDBY 4
(4/5) C950
3300
POWER RELAY 5
16V
CNP505
(1pin to 5pin)
(Page 22)
E
Q921
2SC1740S-QRT
AC DET
0
F C924
R922
0.6
1
22k
50V
R921
R923
47k
10k
G
H
w w w
STR-K990
4 5 6
R810
0.22
1/2W
D920 D923 C913
10EDB40-TA2B5
10EDB40-TA2B5 0.1
D921 D922
10EDB40-TA2B5 10EDB40-TA2B5
R811
0.22
1/2W
F901
5A/125V
Q901
FH901
2SC1740S-QRT
RELAY DRIVE
0.2
R903
0.8
2.2k
R902
47k
RY901
R904
1
1/4W
D910
10EDB40-TA2B5 JW905
7.5
D911
C920
JW908
10EDB40-TA2B5
0.1
D912
4
10EDB40-TA2B5
C922
0.1
6 3
D913
C921
10EDB40-TA2B5
0.1
D914
1SS133T-72
R901
3.3M
8 1
D915
1SS133T-72
T902
POWER TRANSFORMER
(SUB)
x a o
. i
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7 8 9
DCDC BOARD
CN4001
CNP804
3P
3P
FH4001
AC-R2-17V 1
1 R2 AC
CL003
2 R2 GND GND 2
CL004
3 R2 AC AC-R2-17V 3
FH4003
CNP805
3P
1 R2 AC
2 R2 GND
3 R2 AC
CNP902
2P
FH902
1 LIVE
2 NEUTRAL
CNP901
3P
1 LIVE L
Q Q
AC IN
3 7
2 NEUTRAL
N
G901
No mark:FM
(CHASSIS)
u 1 6 3
y
32 32
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2 4
8 9 9
10 11 12
IC4001
SI-8050S-LF1101
1 2 3 4 5
F4001
T3.15AL/250V
FH4002
D4001
D3SB60F3
L4000
100uH
F4002
C4002
T3.15AL/250V
C4003
3300
1000
FH4004
35V
35V
D4803
RK36LF-B3
6 3 1 5 1 5 0 8 9
T901
POWER TRANSFORMER
(MAIN)
(Page 28)
(Page 28)
m
c o
.
2
8 9 9
13 14
IC4001
+6.3V REG
L4001
100uH
C4006
0.47
E E
R4001 1 DGND
470
DIGITAL
2 +6.3V
BOARD
3 +4.1V
C4005
1000
(1/5)
R4002 16V CN4103
680
3P
CNP512
(Page 19)
No mark:FM
2 4 9 8 2 9 9
J
MAIN
BOARD
(4/4)
CNP801
K
MAIN
BOARD
(4/4)
CNP802