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9.0 External Display Self-Test
If the display problem occurs only when using an external display, use the
following instructions to correct the problem.
1.
If the screen is rolling, replace the display.
If the problem remains, go to the next step.
2.
Run the following display self-test:
a.
Power-off the system and the display.
b.
Disconnect the display signal cable from the system.
c.
Power-on the display.
d.
Turn the contrast control to its maximum position.
e.
Turn the brightness control to the center detent position.
3.
Check for the following conditions:
The screen should be white or light gray, with a black margin as
described below:
-
8503, 8512, 8513, 8514:
or both sides
-
8506:
2-50 mm (0.08-1.97 in.) wide on the top, bottom, or
both
-
8507, 8508, 8515:
bottom, or both.
The screen intensity should vary when turning the contrast and
brightness controls.
If the screen differs from the above, replace the display.
If the display passes the display self-test, replace the FRUs, in the
following order, until the problem is corrected.
a.
I/O panel assembly
b.
Display control card
IBM PS/2 Model CL57 SX HMS
External Display Self-Test
2-20 mm (0.08-0.79 in.) wide on one
2-20 mm (0.08-0.79 in.) wide on the top,
¦ Copyright IBM Corp. 1992
9.0 - 1
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