Acer AL1702 AL1702 Service Guide - Page 13

1. No display of screen (Screen is black, color of LED is amber) AL1702 Does OSM display when you push PROCEED buttom. No When a sugnal isn't being inputed, it is indicated with "VIDEO INPUT". it is indicated with "OUT OIF RANGE" at the Yes time of the frequency that it can't be distinguished. Proceed "No OSM display" section. Check if the sync signal from computer is output and if the video cable is connected normally. NG OK Input the sync signal of computer, or change the cable. Proceed "checking the resolution change IC movement" section. Page 11