Lenovo ThinkPad 380ED HMM ThinkPad 380XD,385XD (May 1998) - Page 42

External Monitor Self-Test, 63XX, 85XX, or 95XX displays.

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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: Check that the 95XX systems support either 63XX, 85XX, or 95XX displays. 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: The screen contrast and brightness control are adjustable. The screen is either white or light gray, with a black margin (test margin). 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. 34 IBM ThinkPad 380XD, 385XD

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±
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:
±
Check that the 95XX systems support either
63XX, 85XX, or 95XX displays.
±
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:
±
The screen contrast and brightness control are
adjustable.
±
The screen is either white or light gray, with a black
margin (test margin).
±
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.
34
IBM ThinkPad 380XD, 385XD