Acer AL2021 User Manual page 9

Problems
Power LED is not ON
No Picture
Picture shows inappropriate colors
Picture bounces or a wave pattern
is present in the picture
Image is not sized or centered
properly
Caution: Do not attempt to service the monitor yourself or open the computer
yourself. Please refer all servicing to qualified service personnel if
the problems cannot be solved in "Troubleshooting" section.
Troubleshooting
Possible Solutions
•
Check to see if the power switch is in the
ON position.
•
Ensure that the Power Cord is connected.
•
Check to see if the power switch is in the
ON position.
•
Ensure that the Power Cord is connected.
•
Ensure the video cable is securely
connected to the back of the monitor and
the computer.
•
Move the mouse or press any key on the
keyboard to bring the monitor out of "active
off" mode.
•
See "Color Adjustment" to adjust RGB
color or to select color temperature.
•
Move or switch off electrical devices that
may be causing interference.
•
Inspect the monitor's video cable and ensure
that none of the pins are bent.
•
Press select/auto key and the monitor will
automatically optimize the position of your
display.
•
See "Position adjustment".
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