The resolution is to high or low for the LCD.
(a) The refresh rate is set to high. Refresh on an LCD is different than a CRT. Set the refresh to
60Hz. CRT’s need a high refresh rate to avoid flicker. The refresh rate has no impact on LCD’s.
(b) The power source is incorrect.
(c) The unit is malfunctioning. If you believe this to be true, disconnect the video cable from the rear
of the LCD and connect to a known good computer CRT display. If the computer display is
working satisfactory and the video is within the appropriate range, then contact VarTech
Customer service for a RMA number.
Connecting the Display
1. Connect all cables to the computer first. This would include the VGA cable and the optional RS
232 serial touch screen connection.
2. After connecting the cables between the LCD monitor and the computer, plug the power cord into
the 115/220VAC power outlet if using using the optional AC to 12VDC power supply.
3. Once the 115/220VAC connection is made, the display is active.
4. If your computer was off, turn on your computer.
5. Your display should now operate as a normal computer display showing your windows or
whatever video is being sent to the flat panel.
5
Note:
If for any reason the display goes blank and gives an “out of Range” or “No Sync”, your computer
or video source is putting out a signal that is out of range of the LCD’s video board. If this happens,
reboot the computer or video source and make sure you are inputting the correct signal. If the dis-
play doesn’t work properly, it may be because:
