Lenovo ThinkPad i Series 1400 Hardware Maintenance Manual (August 1999) - Page 37

Audio Function Check, TrackPoint IV Check, Replace the Audio and Battery Function Con

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Reconnect the keyboard flexible cables. Replace the TrackPoint board. Replace the keyboard. Replace the system 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 system board. Audio Function Check Do as follows: 1. Boot from the diagnostics diskette and start the PQA program (please refer to "Running the PQA Diagnostics Program" on page 49). 2. If the test detects an audio board problem, do the following actions, one at a time, to correct the problem. Do not replace a non-defective FRU. Check the speaker and the speaker connections. Replace the Audio I/O board. Replace the Audio and Battery Function Connection Board. Replace the system board. TrackPoint IV Check The TrackPoint does automatic compensations to adjust the pointer sensor. During this process, the pointer moves on the screen automatically for a short time. This selfacting pointer movement can occur when a slight, steady pressure is applied to the TrackPoint pointer while the computer is powered on or while the system is running, or when readjustment is required because the temperature has exceeded its normal temperature range. This symptom does not indicate 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 PQA program (please refer to "Running the PQA Diagnostics Program" on page 49). ThinkPad i Series 1400 (Part I) 29

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±
Reconnect the keyboard flexible cables.
±
Replace the TrackPoint board.
±
Replace the keyboard.
±
Replace the system 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
system board.
Audio Function Check
Do as follows:
1.
Boot from the diagnostics diskette and start the PQA
program (please refer to “Running the PQA Diagnos-
tics Program” on page
49).
2.
If the test detects an audio board problem, do the fol-
lowing actions, one at a time, to correct the problem.
Do not replace a non-defective FRU.
±
Check the speaker and the speaker connections.
±
Replace the Audio I/O board.
±
Replace the Audio and Battery Function Con-
nection Board.
±
Replace the system board.
TrackPoint IV Check
The TrackPoint does automatic compensations to adjust
the pointer sensor. During this process, the pointer moves
on the screen automatically for a short time. This self-
acting pointer movement can occur when a slight, steady
pressure is applied to the TrackPoint pointer while the
computer is powered on or while the system is running, or
when readjustment is required because the temperature
has exceeded its normal temperature range.
This
symptom does not indicate 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 PQA
program (please refer to “Running the PQA Diagnos-
tics Program” on page
49).
ThinkPad i Series 1400 (Part I)
29