Service manual

Power Board and Ballast
Optical Engine
DMD CHIP Board
Lamp On
Control Signal
RGB 888
2.5V, 5V, 12V
IR Rear B oard
Keypad
Color Wheel
Sensor Board
Sensor Signal
C
o
l
o
r
W
h
e
e
l
S
e
n
s
o
r
Power & Control
Data
PFC
PW166 Scaler
Color Wheel
DMD
Optical Device
Lamp Module
EMI Filter
Ballast
DC/DC
A/D Converter
Video Decoder
Video Input
S-video Input
D-Sub Input
DVI Input
Main
Board
Fan
DMD Driver
Overview
The Main Board of PB8250 is mainly composed of an ADC converter(AD9882), a
ImageProcessor(PW166) , a EEPROM(24C16) and a flash memory (MBM29LV800B) .
The input signal are DVI-I,DVI-A and analog RGB format , which comes from the standard DVI
and VGA D_SUB connectors, the signal input to ADC converter , which output RGB digital data
stream to Image Processor .
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