IBM ThinkPad 380XD, Hardware Maintenance Manual

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Ÿ
Parallel port test with the wrap plug installed on
the replicator
10. If diagnostic errors appear, replace the replicator or
diskette drive attachment unit.
If the problem remains after the replacement, replace
the system board.
11. If power problems appear only when the replicator is
used, replace the replicator.
External Monitor Self-Test
If a monitor problem occurs only when an external monitor
is connected, do the following:
Note: Before you replace a monitor:
Ÿ
Check that the 95XX systems support either
63XX, 85XX, or 95XX displays.
Ÿ
Make sure that the external monitor is
properly connected to the computer.
If the screen is rolling, replace the external monitor. If that
does not correct the problem, replace the FRUs in the
following order:
1. System board
2. Bus adapter (if used)
If the screen is not rolling, run the monitor self-test as
follows:
1. Power-off the computer and monitor.
2. Disconnect the monitor signal cable.
3. Power-on the monitor
4. Set the contrast to its maximum position.
5. Set the brightness control to the center detent
position.
Check the following conditions:
Ÿ
The screen contrast and brightness control are
adjustable.
Ÿ
The screen is either white or light gray, with a black
margin (test margin).
Ÿ
The screen is set to CRT or both on the ThinkPad
Configration program.
Note: The location of the test margin may vary with
the type of monitor. It can be either at the top
and/or bottom, or left and/or right of the
screen.
If you do not see a test margin on the screen, replace the
monitor. If there is a test margin on the screen, replace
the system board.
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IBM ThinkPad 380XD, 385XD