IBM R31 - Manual (Page 112)

FRU Applicable test
TrackPont or Pointing
device If the TrackPoint does not work, see if an
external PS/2 mouse is connected to the
mouse/keyboard connector and remove
it. The TrackPoint is automatically
disabled if an external PS/2 mouse is
attached. Check also if the TrackPoint
driver is correctly installed by accessing
Windows Device Manager via the System
icon in the Control Panel.
After you use the TrackPoint, the pointer
drifts on the screen for a short time. This
self-acting pointer movement can occur
when a slight, steady pressure is applied
to the TrackPoint pointer. This symptom
is not a hardware problem. No service
actions are necessary if the pointer
movement stops in a short period of time.
If this does not correct the TrackPoint
problem, continue with the following:
Mouse (Interactive Tests).
Hard disk drive Fixed Disks (Diagnostics)
CD-ROM drive CD-ROM, DVD, CD-RW, DVD/CD-RW
(Interactive Tests)
Memory
1. If a DIMM is installed, remove it and
run Memory Test-Quick (Diagnostics)
2. If the problem does not recur, replace
the DIMM and run the test again.
3. If the test does not detect the error,
run Memory Test-Full (Diagnostics)
Fan
1. Power on system and check the air
turbulence at the louver at the rear of
the computer.
2. Run the fan test in Other Devices
(Diagnostics).
106 ThinkPad R30/R31 HMM