Acer K222HQL Lifecycle Extension Manual page 13

(HDMI/DP Mode)
Problems Current Status
LED ON
LED OFF
No Picture
LED displays
amber color
Abnormal
Sound
No sound, or
(Only
sound level is too
Audio-Input
low
model)
(Optional)
Remedy
Using OSD, adjust brightness and contrast to

maximum or reset to their default settings.
Check the power switch.

Check if AC power cord is properly connected

to the monitor.
Check if video signal cable is properly

connected at the back of monitor.
Check if the power of computer system is ON.

Check the audio cable with the host PC is

connected.
Check if the volume setup of the host PC is in

minimum position and try to raise the volume
level.
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ACER K222HQL