Schematic Diagram - Main Section (3/3) - Sony STR-KS500 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
4-11. SCHEMATIC DIAGRAM – MAIN Section (3/3) –
AUDIO -
CHASSIS GND
+7V
AUDIO +
(Page 17)
A1
A2
A3
A4
A5
A6
A7
A8
A9
(Page 18)
A10
A11
A12
A13
A14
CNP861
3P
M1
(FAN)
CNS822
21P
F.RY
FRONT SP RELAY
C.RY
CENTER SP RELAY
S.RY
REAR SP RELAY
T E
L LEVEL_DETECT 1 3 9 4 2 2 9 6 5 1 3
F_CTRL2
F_CTRL1
PROTECTOR
+V
F_CLK
GND
GND
GND
(Page 16)
NC
-30V
STANBY+V
F2
DIGITAL+V
F1
STOP
POWER RELAY
HIGH SPEED DETECT
CN820
4P
CNP903
w w w
4P
C925
0.1
G102
(CHASSIS)
STR-KS500
(3/3)
C801
0.22 D809
2 D5SBA20
1 4
C802
C818 3 0.22
4700
50V
C819 C820
D812 R832
4700 100
UDZSTE 22k
50V 50V
-1730B
R831
220
D811
ISR154-400
Q861
2SB734
FAN MOTOR ON/OFF SWITCH
R886
100
Q863
R885 DTA124EKA
100
Q866
DTA124EKA
LEVEL SHIFT
Q862,863
FAN MOTOR CONTROL SWITCH
F2
R557 R555 R553 D550
220k 4.7k 10k 1SS355WTE-17
F1
C561
4.7
50V Q551
Q550 2SC3052
2SC3052
C563
R558 R556 R552 1
C562
100k 68k R554 3.3k 50V
1
820
50V
Q550,551
FAN MOTOR LEVEL DETECT
Q951
2SC3052
POWER ON/OFF D951
R953
1SS355WTE-17
RELAY DRIVE 1
R952
4.7k
D952 C922 D954
ISR154-400 0.022 ISR154-400
D953
C923
R951 ISR154-400
3300
47k
16V
C921
D955 0.022
C924
R955 ISR154-400
1
100k R954
50V
47k
x a o
y
R956 D956
Q901 10k 1SS355WTE-17
2SC3052
AC POWER DETECT
. i
D957
1SS355WTE-17
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D810 R791 R741
ISR154-400 4.7 4.7
R664 R643 C741
4.7 4.7 0.01
D813 C664 C643 C791
UDZSTE-176.8B 0.01 0.01 0.01
C811
1000
25V
R882
R881 3.3k
C812
1.5k
1000
25V
R864 C821
Q867
47k 220
DTA124EKA
35V
D820
UDZSTE-175.6B
R884
Q Q
47k
3 7 6
Q862
DTA124EKA
Q868
DTA124EKA
C871
100
16V
R883
2.2k
Q867,868
FAN MOTOR CONTROL SWITCH
C565
100
16V D806 R910
ISR154-400 0.22
F1
R551 C564 C817
100k 4.7 3300 D805 C815
50V 16V ISR154-400 0.1
F2
D808 C816
ISR154-400 0.1
D807
ISR154-400
F901 CNP902 T901
T1.25AL 2P
MAIN POWER TRANSFORMER
250V
RY901
T902
SUB POWER CNP901
2P
TRANSFORMER
u 1 6 3
(AC IN)
19 19
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2 4
8 9 9
CNP801
3P
+B
-B
C813
D801 0.001 R810 CNP804
D802 ISR154-400 0.47 3P
ISR154-400 1/2W
+R2
D803 D804
ISR154-400 ISR154-400
-R2
C814
0.001
R811
0.47
1/2W
CN700
4P
C
3 1 5 1 5 0 8 9 2
GND
SW
GND
C744
390p
(CHASSIS)
C794
330p
C694
330p
C844
330p
(CHASSIS)
CNP802
5P
+R3
F1
F2
-R3
m
c o
.
STR-KS500
2
8 9 9
TM500
SPEAKERS
FRONT SURROUND
L L
R R
TM501
SPEAKERS
CENTER
C642 C641
0.01 0.01 SUB WOOFER
CN701
4P
C
4 9 R642 8 R641 2 9 9
4.7 4.7
GND
SW
GND
C544 C644
330p 330p
EP100