1.4.6 External Display Self Test
Be sure the display has been turned on for at least 5 minutes before you
start the display self test.
Note: This test works only on IBM displays.
Run the test as follows:
1. Power-off the system.
2. Disconnect the display cable from the system.
3. Power-on the display.
4. Adjust the contrast control to maximum.
5. Adjust the brightness control to its middle position.
6. The image on the display should be white in the center with a black
strip, 2 to 20 mm (0.08 to 0.79 in.), on one or both sides. Some
shading may occur near the edges.
IBM ThinkPad 500 HMM
External Display Self Test
¦ Copyright IBM Corp. 1993
1.4.6 - 1