Acer X223 Service Manual - Page 22
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5.2 Nothing display on screen (screen is black, color of LED is
blue)
Is backlight lit?
OK
Is backlight lit?
OK
Check OSM menu is display on
screen when you push the
"PROCEED" key.
OK
Proceed "Abnormal sreen" dection"
5. Troubleshooting (continued)
NG
Refer "Checking the backlight unit" section"
Check the video cable for failure. Check
the host for output signal is all black or not.
1) Change pattern of video signal output on the host.
NG
2) Reconnect the video cable.
3) Change the video cable.
NG
Check if the LCD video signal cable
is connected between the Interface
Board and LCD module.
Failure Point
NG
The LCD video signal cable is
disconnected.
OK
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ACER X223W
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