BenQ PB8250 - XGA DLP Projector, Service Manual

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Power B oard and B allast Optical Engine
DMD C HIP B oard
Lam p On
C
ont
ro
l
S
igna
l
R
G
B
888
2.
5V
,
5V
,
12V
IR R ear B oard
Keypad
C olor W heel
Sensor B oard
Sensor Signal
D
a
t
a
&
C
o
n
t
r
o
l
S
i
g
n
a
l
C olor Wheel
Sensor
Power & C ontrol
Data
PFC
PW 166 Scaler
C olor W heel
DM D
Optical Device Lam p Module
EMI Filter
B allast
DC /DC
A/D C onverter 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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