R5912858 /05 AMM240ED24
6.1 Troubleshooting list
To diagnose a problem
Before sending your LCD display for servicing, check the troubleshooting list below to see if you can self-
diagnose the problem.
Problem Current status
Remedy
No picture Power LED ON Using the OSD, adjust brightness
and contrast to maximum or reset
to the default settings.
Power LED OFF Check the Standby Power Button
and Power switch.
Check if the AC power cord is
properly connected to the AC-
Adaptor.
Power LED blinking Check if the video signal cable is
properly connected at the back of
the display.
Check if the power to the computer
system is ON.
Abnormal picture Unstable picture Check if the specification of the
graphics adapter and the display 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.
Troubleshooting
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