Read Sony SA-WSRD15 Service Manual online
SA-WSRD15
6
6
SA-WSRD15
3-3. BLOCK DIAGRAM – POWER SUPPLY Section –
3
POWER CONTROL
IC901
D
(AC IN)
MAIN POWER
TRANSFORMER
T901
SUB POWER
TRANSFORMER
T902
F901
D908
ISOLATOR
PC901
B+ SWITCH
Q901
4 VCC
1 OCP/SYNC
5 FB/OLP
1
POWER CONTROL
IC921
DRAIN
4 VCC
6 FB/OLP
8 STARTUP
RECT
D931
D931
D932
ISOLATOR
PC903
SHUNT
REGULATOR
IC931
D922
D501
D910
D905
POWER ON/OFF
CONTROL
Q943, 947
AMP +30.5V
RECT
D943
D943
D502
BACK UP 3.3V
D506
E4V
VREF 3.5V
EVR 3.3V
20
AC_CUT
12
RESET
43
P_CONT1
SYSTEM
CONTROLLER
IC501 (3/3)
D906, 907
TH901
B+ SWITCH
Q921
ISOLATOR
PC902
DSP +1.8V
+3.3V
REGULATOR
IC943
STBY_LED
4
10
84
FL_DATA
35
LINE FILTER
LF901,902
RECT
D901
D901
+1.8V
REGULATOR
IC508
+1.8V
REGULATOR
IC303
D +3.3V
AMP +1.8V
RECT
D942
D942
A+5V
+5V
REGULATOR
IC510
+6V
44
P_CONT2
RECT
D941
D941
+12V
REGULATOR
IC941
+9V
REGULATOR
IC512
AMP+12V
D +9V
VOLTAGE
DETECT
IC505
RESET
SWITCH
Q505
FAN MOTOR
DRIVE
Q302 – 304
M801
(FAN)
(FAN)
M
B
FAN SENS
SHUNT
REGULATOR
IC951
5
9
13
12
7
3
11
FL_CLK
37
FL_STB
36
KEY1
97
KEY0
95
KEY-INT
74
SIRCS
STBY_LED
FL_DATA
FL_CLK
FL_CE
DD5V
DD5V
KEY1
KEY0
SIRCS
4
+5V
REGULATOR
IC942
CN800
SYSTEM
CONNECTOR
(Page 5)
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