Level 2 Circuit Board And Standard Parts Replacement; Trouble Shooting Guide - Acer P244W Service Manual

6. Level 2 Circuit Board and Standard Parts Replacement

6.1. Trouble Shooting Guide

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