TROUBLESHOOTING
Before sending your LCD monitor for servicing, please check the troubleshooting
list below to see if you can self-diagnose the problem.
AMM240ED
25
Problems
Current Status
Remedy
No Picture
Power LED ON
· Using OSD, adjust brightness and
contrast to maximum or reset to their
default settings.
Power LED OFF
· Check the Standby Power Button and
Power switch.
· Check if AC power cord is properly
connected to the AC adapter.
Power LED Blinking
· Check if video signal cable is properly
connected at the back of monitor.
· Check if the power to computer system
is ON.
Abnormal Picture
Unstable Picture
· Check if the specification of graphics
adapter and monitor is in compliance
which may be causing the input signal
frequency mismatch.
Display is missing, center shift,
or too small or too large in
display size
· Using the Screen Control Menu, adjust
the Phase, Frequency, Horizontal, and
Vertical settings in order to correct the
display image.