Acer CB2 Series CB272U smiiprx 27" 16:9 HDR FreeSync IPS Monitor - Manual (Page 31)

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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.
HDMI2.0/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.
If OSD Lock is On, the LED status set Amber.
Note: Acer monitor is purposed for video and visual display of information obtained from
electronic devices.
Regulatory Compliance
217186
60950-1