Service manual

25
5.2 Power Board
5V
EMI filter
Start Resistor
(R904)
Transformer
(T901)
AC input
14.5V
Bridge
Rectifier
and Filter
Feedback
Circuit
Rectifier
diodes
Photo coupler
(IC903)
Regulator
(IC904)
Power Switch
(Q901)
PWM Control
LD7750GS
(
IC901
)
D801
LED
(CN803)
PWM Control
MP3389EF
(U801)
14.5V
MOSFET
(Q806)
OFF
DIM
L801