Technical information

2.4.2.1 Display Self-test
The self-test pattern comprises a full white raster with a black border.
The display must be switched on for 5 minutes before starting the test.
If the image is not present or not steady, exchange the display.
1. Power off the display.
2. Check that the signal cable is disconnected.
3. Power on the display.
4. Set the background brightness control to maximum (from left to right).
5. The image on the screen should be white with a black border, 2 mm to
20 mm (0.08 in. to 0.79 in.), on all or most sides.
For extended display tests, run the advanced diagnostic tests.
PS/2 Displays Maintenance Manual
Display Self-test
¦ Copyright IBM Corp. 1993
2.4.2.1 - 1