Acer ET.CV3WP.B01 User Manual - Page 27
Troubleshooting, VGA mode
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13 English Troubleshooting Before sending your LCD monitor for servicing, please check the troubleshooting list below to see if you can self-diagnose the problem. VGA mode Problem No picture visible LED status Blue Off Remedy Using the OSD, adjust brightness and contrast to maximum or reset to their default settings. Check the power switch. Amber Check if the power cord is properly connected to the monitor. Check if the video signal cable is properly connected at the back of monitor. Unstable picture Abnormal picture Check if the computer system is switched on and in power saving/ standby mode. Check if the specification of graphics adapter and monitor is in compliance which may be causing the input signal frequency mismatch. Image is missing, off-center, too large or too small on the screen. Using the OSD, adjust focus, clock, Hposition and V-position with nonstandard signals. Check the display setting on your system. In case of a missing image, please select another resolution or vertical refresh rate. Wait for a few seconds after adjusting the size of the image before changing or disconnecting the signal cable or switching off the monitor.