Acer ET221Q User Manual download pdf (Page 25)

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Troubleshooting

Before sending your LCD monitor for servicing, please check the troubleshooting list below

to see if you can self-diagnose the problem.

HDMI/VGA/DVI Mode (Optional)

Problem LED status Remedy

No picture visible Blue Using the OSD menu, adjust brightness and

contrast to maximum or reset to their default

setting.

Off Check the power switch.

Check if the AC power cord is properly

connected to the monitor.

Amber Check if the video signal cable is properly

connected at the back of monitor.

Check if the computer system is switched on

and in power saving/standby mode.

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Acer ET221Q User Manual Page 25