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Replace the planar board.
The following external input devices are supported for this
computer:
Numeric keypad
Mouse (PS/2 compatible)
Keyboard
If any of these devices do not work, reconnect the cable
connector and repeat the failing operation.
If the problem still exists, replace the device, and then the
planar board.
Audio Function Check
Do as follows:
1. Boot from the diagnostics diskette and start the PC
Doctor program (please refer to “Running the PC
Doctor Diagnostics Program” on page 29).
2. Select Interactive Tests.
3. Select Internal Speaker.
If no sound is played, replace the speaker or the
planar board.
4. Select Stereo Speaker.
If no music is played, replace the speaker or the
planar board.
TrackPoint IV Check
If the external mouse is connected, the TrackPoint does
not work. In this case, please detach the external mouse to
check the TrackPoint.
If this does not correct the TrackPoint problem, continue
with the following:
Note: 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 pres-
sure 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 a click button problem or pointing stick problem occurs,
do the following:
1. Boot from the diagnostics diskette and start the PC
Doctor program (please refer to “Running the PC
Doctor Diagnostics Program” on page 29).
2. Select Interactive Tests.
3. Select Mouse.
4. Follow the instructions in the message window.
10 ThinkPad i Series 1400