Acer ET400U User Manual download pdf (Page 28)

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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/DP 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.

Note: Acer monitor is purposed for video and visual display of information obtained from

electronic devices.

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Acer ET400U User Manual Page 28