Troubleshooting - Advan 240-030-970 User Manual

Troubleshooting

Before returning your LCD display for service, consult the troubleshooting list
below:
Problem
No picture
Abnormal picture
OSD error
message
OSD error
message
28
22
Current Status
LED on
LED off
LED blinking
Oversized,
undersized, or
missing display; or
center shift.
"No wireless
channels available"
"Video format not
supported"
Remedy
Using the OSD, adjust the brightness
and contrast to maximum, or reset
them to their default settings.
Check the power switch at the front
and back of the display.
Check if the AC power cord is
properly connected to the AC
adapter.
Check if the video signal cable is
properly connected at the back of the
display.
Check if power of the video signal
source system is ON.
Abnormal
Using the Screen Menu, adjust
the PHASE, FREQUENCY,
HORIZONTAL, and VERTICAL
settings with non-standard video
signal timing.
Wait a few seconds after initial sync
of video signals, or power cycle the
display.
Please turn off potential wireless
interference, such as 802.11a/n
access points and .8 GHz phones
Ensure that an acceptable video
source is connected. Refer to
technical specifications for a list of
acceptable video formats.