Sanyo PLV-55WHD1 Service Manual page 102

IC Block Diagrams
● FA5502M <P. F. Controller, IC601>
IC601 FA5502M
Oscillator
R
T
Soft Start
C
CT
T
15 11
SYNC
14 OSC
+
15k
-
CUR.AMP
4.85k
R
S
Q
0.39V
S
OCP.COMP
1
16
IFB
IDET
Current Error Amplifier
● FA7700V, FA7701V
<Switching power supply controller,
IC181, IC5601, IC5621, IC7801,
IC7821, IC7841, IC7861>
Output ON/OFF Control
REF VCC
13 10
CS
11µA
UVLO
REF
5V
16.5V/8.9V
PWM.COMP
1.55V
ER.AMP
11k
MUL
OVP.COMP
1.64V
2 3
VDET
IIN-
Multiplier
ON : Hi
OFF : Low
18V
ON/OFF
C5
12
Rg1
ON/OFF
AC INPUT
3.95V/
2.8V
Vin
VC
9
OUT
8
Rg2
PWM OUTPUT
GND
7
6
-
VIN- Voltage Error Amplifier
1.55V
+
C1
R4
VFB
5
4
OVP
Overvoltage Protection
● LA42152 <Audio Amplifier,
-102-
Boost Converter
D1
L
Q Vo
Co
Rs
D2
R2
R3
VR1
R12
Output
Voltage
Adjustment
R11
IC001
LAMP
BALLAST
>