Sony HCD-C770 Service Manual page 87

– POWER Board –
IC901 STR-F6238 (US, Canadian), STR-F6267S (AEP, Australian)
OVER
CURRENT
PROTECTOR
INH1
FEED BACK
INH2
DRIVE
1 2
IC903 SI-8050S-LF1101
OVER
REGULATOR CURRENT
PROTECTOR
RESET
OSC
+
–
COMPARATOR
+
–
ERROR AMP
1
IC906 SI-8033JF
REGULATOR CURRENT
PROTECTOR
RESET
ON/OFF
OSC
SOFT
COMPARATOR
START
+
–
+
–
ERROR AMP
1
REGULATOR
OVER
VOLTAGE
PROTECTOR
LATCH
THERMAL
SHUT DOWN
OSC
OVER LOAD
PROTECTOR
3
LATCH
&
DRIVER
OVER HEAT
PROTECTOR
VREF
2 3
4 5
OVER
LATCH
&
DRIVER
OVER HEAT
PROTECTOR
VREF
2 3 4 5
DRIVE
START
REGULATOR
CURRENT
MIRROR
4 5
IC904 M51945BL
1
IC908 SI-8120JF
REGULATOR
ON/OFF
OSC
SOFT
START
1
HCD-C770/C990
–
+
2 3 4 5
OVER
CURRENT
PROTECTOR
LATCH
RESET
DRIVER
COMPARATOR
+
OVER HEAT
–
PROTECTOR
+
–
VREF
ERROR AMP
2 3
&
4 5
87