Trouble Shooting Guide - BenQ DLP PROJECTOR PE8700 Service Manual

1. System trouble shooting :
Is LED light when
Main Power Switch
on?
y
Is Orange LED
active when remote
power on?
y
Is lamp turned on?
y
Does starting OSD
shows normally?
y
Does DVI-I signal
shows normally?
y
Does Video signal
shows normally?

9. Trouble Shooting Guide

Check door luck
n
switch
Are fans spinning?
n
Check DMD board
Check ballast
n
Check lamp
Does any stripe
n
shows on screen?
Check Connector
n
board and FPC
board
Check Main board ,
n
FPC and Connector
board
1.Check +3Vs, +5Vs
n
2. Check power
Check fans, wire and
n
Translation board
Check DMD board
y
Check DMD
socket
n
Check Main board, DMD
board
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