Planar PT1501MU - Manual (Page 23)

Warning Signal
If you see warning messages on your LCD screen, this means that the LCD display
cannot receive a clean signal from the computer graphics card.
There may be two sources for this problem. Please check the cable connections or
contact Planar for more information.
4
No Signal
This message means that the LCD display has been powered on but it cannot
receive any signal from the computer graphic card. Check all the power switches,
power cables, and VGA signal cable.
4
Out of Range
This message means that the signal of the computer graphic card is not compatible
with the LCD display. When the signal is not included in the “Video Modes” list we
have listed in the Appendices of this manual, the LCD display will display this
message.
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