Acer AL1716 AL1716W Service Guide - Page 17
Troubleshooting continued - screen resolution
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16 ACER AL1716W Go to cover page 4. Troubleshooting (continued) 4.3 No.display of screen (Screen is black, color of LED is amber) 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. 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