Asus VS239H - Power Board Block Diagram

Service Manual ASUS VS239H
18
4.2 Power Board
ZD801
LED
(CN802)
PWM Control
OZ9998AGN
(IC801)
16V
DIM
ON/OFF
L801
Q801
EMI filter
Start Resistor
(R905,R908,R909)
PWM Control
(IC901)
Transformer
AC input
16V
Bridge
Rectifier
and Filter
Feedback
Circuit
Rectifier
diodes
Power Switch
(Q901)
Photo coupler
(IC902)
5V