Sony HCD-HDX265 Service Manual page 75

– POWER Board –
IC901 STR-F6138-LF1352 (Except HDX265: E, Australian models)
IC901 STR-F6168-LF1352 (HDX265: E, Australian models)
CURRENT
MIRROR
OVER
CURRENT
PROTECT
2
LOGIC
OVER
CURRENT FEED
PROTECT BACK
2
1
IC921 STR-V153
OVP
+
TSD
DRIVE
POWER
MOS FET
BLANKING
OCP
+
BUFFER
1 2 3 4
HCD-HDX265/HDX266/HDX267W/HDX465/HDX466/HDX665
OSC
DELAY
DELAY
BOTTOM
SKIP
LOGIC
OVER
INH INH CURRENT
2 1 PROTECT
1
SWITCHING
REGULATOR
BLOCK
2 3
INTERNAL
DELAY LATCH
OLP
+
BURST
DISCHARGE
5 6 7
LATCH
THERMAL
OVER VOLTAGE
PROTECT SHUT DOWN
INTERNAL BIAS
UNDER VOLTAGE
4
UVLO
+
BIAS
PRC LATCH
Q S
+
R
+
–
FB
OVER LOAD
PROTECT
LOCK OUT
5
OFF TIMER
8
75