Acer X223 Manual de serviço - Página 21
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ACER X223W
20
5. Troubleshooting
Go to cover page
5.1 No.display of screen (Screen is black, color of LED is
amber)
Does OSM display when you push
PROCEED buttom.
No
Proceed "No OSM display" section.
When a signal isn't being inputted, it is
indicated with "No Signal Input". it is
indicated with "Out Of Range" at the
Yes
time of the frequency that it can't be
distinguished.
Check if the sync signal from computer is
output and if the video cable is
connected normally.
Input the sync signal of computer, or
NG
change the cable.
OK
Proceed "checking the resolution
change IC movement" section.