Troubleshooting - BenQ V37X Product Service Manual

Troubleshooting

1.
System trouble shooting :
Power On OK?
Backlight OK?
(No full white)
IR
controller,
keypad and LED
OSD Image OK?
No signal?
Audio OK?
Function OK?
1.
No
2.
3.
Yes
No
1.
Yes
Remote
1.
No
2.
3.
Yes
No
2.
Yes
Yes
1.
2.
No
No
1.
1.
Yes
No
1.
Check cable connection between AC socket and power board.
Check cable connection between power board and main board.
Check power board +V5S is avaluable or not
Check cable connection between main board and LCD panel
Check remote controller battery.
Check remote controller.
Check wire connection between main board ,keypad and IR
Check cable connection between main board and LCD panel.
Check input cable.
Check OSD source set up.
Check wire between power board and speaker.
Check audio input connection.
Check main board
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