Troubleshooting Procedures - Planar PT120 User Manual

Troubleshooting Procedures

This LCD Monitor was pre-adjusted in the factory with standard VGA timing. Due to output timing differ-
ences among various VGA cards, you may initially experience an unstable or unclear display when a new
display mode or new VGA card is selected.
This LCD Monitor Supports Multiple VGA Modes. Refer to Addendum for a listing of the fac-
tory preset modes supported by this LCD Monitor.
PROBLEM: Display is Unclear and Unstable
To stabilize and clarify your display, follow this procedure in this order:
It's best to adjust the display on a screen displaying of vertical lines. In Windows, load a
wallpaper bitmap that has vertical lines in it. (or you can select the window shut down screen)
After you have the wallpaper loaded, open the OSD and select the "Clock" function. Press the
top (or bottom) Adjustment Control button and continue pressing the button until you see ver-
When you can see distinct light and dark vertical bands, stop pressing the Adjustment Control
button. Now press the opposite (top or bottom) Adjustment Control button. The vertical dark
and light bands will decrease in number. Keep pressing the button until the distinct bands
Next, press the Function Control button to choose the "Phase" function. The Phase will ad-
just the horizontal display. Press the top (or bottom) Adjustment Control button and you will
see horizontal dark and light lines appear. The number of lines increases as you press the but-
ton. Now press the bottom (or top) Adjustment Control button until the lines disappear and
PROBLEM: There is no LCD Display
If there is no display on the LCD, please perform the following steps:
Make sure that the power indicator on the LCD Monitor is lit, all connections are secure, and
the system is running on the correct timing. Refer to the Addendum for information on tim-
Turn off the LCD Monitor and then turn it back on again. Press the upper Function Control
button (refer to Chapter 2) once and then press either the upper or lower Adjustment Control
button several times. If there is still no display, press the other Adjustment Control button
If step 2 doesn't work, connect your PC system to another external CRT. If your PC System
functions properly with a CRT Monitor but it does not function with the LCD Monitor, and
the LCD Monitor's power LED is blinking, the output timing of the PC's VGA card may be
out of the LCD's synchronous range. Please change to an alternate mode listed in Addendum
tical dark and light lines across the screen.
disappear and you have a clear display.
you have a clear display.
several times.
or replace the VGA card and repeat steps 1 and 2.
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Troubleshooting
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