IBM-AUSTRIA - PC-HW-Support    30 Aug 1999

Display

If the screen is not rolling, do the following to run the display self-test:

1.  Power-off the computer and display.
2.  Disconnect the display signal cable.
3.  Power-on the display.
4.  Turn the brightness and contrast controls clockwise to their maximum  setting.
5.  Check for the following conditions:
   •  You should be able to vary the screen intensity by adjusting the contrast  and brightness controls.
   •  The screen should be white or light gray,  with a black margin (test margin) on the screen.

   NOTE:  The location of the test margin varies with the type of display. The  test margin might be on the top, bottom, or one or both sides.

    If you do not see any test margin on the screen, replace the  display. If there is a test margin on the screen, replace the system board.

   NOTE:  During the first two or three seconds after the display is powered on,  the following might occur while the display synchronizes with the computer.

   •  Unusual patterns or characters
   •  Static, crackling, or clicking sounds
   •  A 'power-on hum' on larger displays

    A noticeable odor might occur on new displays or displays recently removed  from storage.

    These sounds, display patterns, and odors are normal, do not replace any  parts.

    If you are unable to correct the problem, go to 'Undetermined Problem'

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