Acer AL2002 AL2002 Service Guide - Page 39

Appendix 4: Troubleshooting No display on the screen (Screen is black, colour of LED is amber.) ACER AL2002W 3 Go to cover page Does OSM display when you press 'MENU' button? When a signal is not being input, it indicates with 'VIDEO INPUT'. It indicates with 'Out of Range' at the YES time of the frequency that it cannot distinguished. Check if the sync signal from computer is output and if the video cable is connected normally. (VGA or DVI) OK Proceed to 'Checking the resolution change IC movement' section NG Proceed to 'No OSM display' section NG Input the sync signal of computer or change the cable (VGA or DVI)