Planar PT120, PL120 manual Troubleshooting Procedures

Models: PL120 PT120

1 20
Download 20 pages 49.08 Kb
Page 18
Image 18
Troubleshooting

APPENDIX C

Troubleshooting

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- tical dark and light lines across the screen.

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 disappear and you have a clear display.

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 you have a clear display.

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- ing.

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 several times.

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 or replace the VGA card and repeat steps 1 and 2.

13

Page 18
Image 18
Planar PT120, PL120 manual Troubleshooting Procedures