ACER AL502
Instrukcja Serwisowa

AL 502 2. Nothing displays on screen (Screen is black, color of LED is green)

Is backlight lit?

NG OK

Refer "Checking the backlight unit" section

Does computer output RGB video signals?

Check the video cable for failure. Check the host for output signal with all black only.

OK

NG

1) Change pattern of video signal output on the host. 2) Reconnect the video cable. 3) Change the video cable.

Check OSD menu is displayed on screen when you push the "PROCEED" key.

OK

NG

Next Page

Proceed "Abnormal screen" section.

Page 2

Trou e Sh ooti bl ng