BenQ PE8700 service manual Trouble Shooting Guide, System trouble shooting

9. Trouble Shooting Guide

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?

n

n

n

Check door luck switch

Are fans spinning?

Check DMD board Check ballast Check lamp

n

n

1.Check +3Vs, +5Vs 2. Check power

Check fans, wire and

Translation board

y

Does starting OSD shows normally?

n

Does any stripe shows on screen?

y

Check DMD board Check DMD socket

y

Does DVI-I signal shows normally?

y

Does Video signal shows normally?

n

n

Check Connector board and FPC board

Check Main board , FPC and Connector board

n

Check Main board, DMD board

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