Acer X223 X223W LCD Service Guide - Page 22
Nothing display on screen screen is black, color of LED is - x223w troubleshooting
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5. Troubleshooting (continued) 5.2 Nothing display on screen (screen is black, color of LED is blue) ACER X223W 21 Go to cover page Is backlight lit? NG OK Is backlight lit? NG OK Refer "Checking the backlight unit" section" Check the video cable for failure. Check the host for output signal is all black or not. 1) Change pattern of video signal output on the host. 2) Reconnect the video cable. 3) Change the video cable. Check OSM menu is display on screen when you push the "PROCEED" key. OK NG Check if the LCD video signal cable is connected between the Interface Board and LCD module. NG OK Failure Point The LCD video signal cable is disconnected. Proceed "Abnormal sreen" dection" Next Page