Sanyo PLV-55WR1Z Service Manual page 96

IC Block Diagrams
● FA ● FA7700V, FA7701V <Switching Power Supply Controller,
F F A770 A V, FA7701V <S
1
RT
REF 2
IN– 3
4
FB
● ICS512MT <PLL, IC381>
witc hin g P wer
IC6 IC6701, IC7801, IC7821> 01 IC7 01 , IC7
U V L O
V R E F
VREF
2.2V
O S C
BIAS
1.5V
Power Good Signal
+
0.88V
–
+
+
–
P W M
E R . A M P
- 96 -
Su ntro oller
7821
0.3V ON/OFF
–
+
S.C.P
+
1.5V
–
S.C.DET
2.2V
5.5V
+
–
OFF
ON/OFF
● LA7217M <Sync Separator, IC202>
8
CS
7
VCC
6
OUT
5
GND