Q7T3(CPT panel) LCD Monitor Service Guide
Trouble Shooting
1
Q7T3-CPT TROUBLE SHOOTING GUIDE
1.No Display or display is unstable
Nopictureorpictureunstable
Poweroff Yes Turnonpower
No
Doescableplugsin No Checkallofwirethenturnonpower
connector? switchagain.
Yes
Doespowerstable? No CheckPowerBD
Yes
IsLEDlightgreen/orange? No CheckcontrolBD
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
