Read Sony HT-K250 / SA-WMSP250 Service Manual online
19
SA-WMSP250
— PS Board —
IC901 STR-F6267D/STR-F6238S
5
4
3
2
1
OSC
START
REGULATOR
DRIVE
REGULATOR
THERMAL
SHUT DOWN
LATCH
OVER
VOLTAGE
PROTECTOR
OVER
CURRENT
PROTECTOR
OVER LOAD
PROTECTOR
D
GND
FB/OLP
VCC
OCP/SYNC
INH1
INH2
DRIVE
CURRENT
MIRROR
FEED BACK
5
4
3
2
1
ON/OFF
SOFT
START
TSD
VREF
OCP
OSC
PREG.
RESET
LATCH &
DRIVE
GND
SW
OUT
ON/OFF
VS
VIN
COMP.
ERROR AMP
IC903 SI-8120JF
IC907 SI-8050JF
IC907 SI-8050JF
1
2
3
4
5
6
7
8
VDD
VSB
VSA
RESET
GND
OUTC
VSC
CT
VREF
+
–
–
+
–
+
–
+
Q
R
S
IC910 NJM2103M-TE2
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