BenQ Q7T3 Series Service Manual Download

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Q7T3(AUO panel) LCD Monitor Service Guide

Trouble Shooting

Q7T3 TROUBLE SHOOTING GUIDE

No Display or display is unstable:

1.1 Interface

Board:

No picture or picture unstable

Power off Yes Turn on power

Does cable plugs in No Check all of wire then turn on power

connector? switch again.

Yes

Does power stable? No Check Power BD

Yes

Is LED light green/orange? No Check control BD

Yes

Is LED status normal? No Check Flash Rom or replace it

Yes

Does crystal work correctly? No Check crystal CKT or replace it

Yes

Is interface BD normally? No Replace interface BD

Yes

Replace panel

Summary of Contents for Q7T3 Series

Page 1: ...Turn on power No Does cable plugs in No Check all of wire then turn on power connector switch again Yes Does power stable No Check Power BD Yes Is LED light green orange No Check control BD Yes Is LE...

Page 2: ...OSD is not working Yes Is control BD connecting No Plug control BD then retry Yes Is bottom switch normally Yes Replace control BD then retry No Replace Control BD Is OSD working No Check Interface BD...

Page 3: ...N701 again or checking I F BD Turn on level existed BLT_ON Insert them again Check CN752 CN753 was pluged properly Plug CN601 again or checking PW BD Replace IC751 Q751 Replace new fuse Replace new fu...