Table of Contents
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Troubleshooting
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
No picture
Abnormal picture
30
R5912860 /13
AMM215WTD
Current status
Power LED ON
Power LED OFF
Power LED blinking
Unstable picture
Display is missing, center shift, or
too small or too large in display size
Abnormal Picture
(When a signal is changed 1080/
23.98~30p to 1080/50i~60i or vice
versa)
Remedy
Using the OSD, adjust brightness
and contrast to maximum or reset
to the default settings.
Check the Standby Power Button
and Power switch.
Check if the AC power cord is
properly connected to the AC-
Adaptor.
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.
Check if the specification of the
graphics adapter and the display is
in compliance, which may be
causing the input signal frequency
mismatch.
Using the Screen Control Menu,
adjust the Phase, Frequency,
Horizontal, and Vertical settings in
order to correct the display image.
Press and hold the rotary knob
switch in order to search for a new
timing
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Table of Contents
Troubleshooting
