Acer AL1702 AL1702 Service Guide - Page 14

2. Nothing displays on screen (Screen is black, color of LED is green) AL1702 Is backlight lit? NG OK Refer "Checking the backlight unit" section" Does computer output RGB video signals? NG OK Check the video cable for failure. Check the host for output signal with all black only. 1)Change pattern of video signal output on the host. 2)Rsconnect the video cable. 3)Change the video cable. Check OSM menu is display on screen when you push the "PROCEED" key. NG OK Proceed "Abnormal sreen" dection" Check if the LCD video signal cable is connected between the MAIN PWB and LCD module. NG OK Failure Point The cable is disconnected. Next Page Page 12