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24 IBM WorkPad z50, Mobile Companion 24
Keyboard- or TrackPoint-Related Symptoms
Symptom / Error FRU / Action in Sequence
The keyboard (one or more
keys) does not work.
1. On the Windows
Taskbar, check that
Caps Lock or Num Lock
are not enabled.
2. Reseat the keyboard cable
on the mainboard.
3. Keyboard
4. Mainboard
The TrackPoint does not
work.
1. Check the “TrackPoint”
settings in the Control
Panel.
2. Reseat the keyboard cable
on the mainboard.
3. Go to “TrackPoint
Checkout” on page15.
4. Keyboard
5. Mainboard
The pointer moves
automatically or does not
work correctly.
See “TrackPoint Checkout”
on page 15.
LCD-Related Symptoms
Symptom / Error FRU / Action in Sequence
LCD backlight not working.
LCD too dark.
LCD brightness cannot be
adjusted.
LCD contrast cannot be
adjusted.
1. Open the “Display
Properties” window in
the Control Panel.
Check that the auto dim
setting is not enabled
under the “Backlight”
tab.
2. Reseat the LCD cable and
connectors.
3. LCD assembly
4. Inverter assembly
5. Mainboard
LCD screen unreadable.
Non-readable characters.
Screen abnormal.
Wrong color displayed.
1. Reseat the LCD cable
and connectors.
2. LCD assembly
3. Inverter assembly
4. Mainboard
LCD has extra horizontal or
vertical lines displayed.
LCD assembly
LCD lid is loose.
1. Hinge screws
2. Hinge group