Troubleshooting - Asus PA246Q Service Manual

Service Manual
11 Trouble Shooting
11.1 No Display or display is unstable (Interface Board):
Screen is Blank and
Power LED is white.
OSD shown when key pressed?
Backlight turned
"Check LCD Module"
No
Keypad OK?
Yes
ON?
Yes
Scalar output
Data ?
Yes
Follow instructions from OSD dialog
Yes
Proceed to
No
"Check Control Board".
Proceed to
No
"Check Power Board".
Proceed to
No
"Check Scalar"
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PA246Q