BenQ PB8250 Service Manual page 65

DMD C HIP B oard
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 .
Lam p Module Optical Device
Optical Engine
DMD
C olor W heel
C olor W heel
Sensor B oard
Keypad
IR R ear B oard
Lam p On
Power & C ontrol
Data
Sensor Signal
64
PFC
Power B oard and B allast
B allast
Fan
DMD Driver
Main
Board
PW 166 Scaler
A/D C onverter Video Decoder
D-Sub Input
DVI Input S-video Input
EMI Filter
DC /DC
Video Input