IBM 1400 (2611) manual Audio Function Check, TrackPoint

Ÿ Reconnect the keyboard flexible cables.

Ÿ Replace the TrackPoint board.

ŸReplace the keyboard.

ŸReplace the system board.

The following external input devices are supported computer:

ŸNumeric keypad

Ÿ Mouse (PS/2 compatible)

ŸKeyboard

If any of these devices do not work, reconnect connector and repeat the failing operation.

If the problem still exists, replace the device, system board.

Audio Function Check

Do as follows:

1.Boot from the diagnostics diskette and start program (please refer to “Running the PQA Diagno tics Program” on page 49).

2.If the test detects an audio board problem

lowing actions, one at		a time, to correct the
Do	not replace a non-defective FRU.
Ÿ	Check the speaker and the speaker connectio
Ÿ	Replace the Audio	I/O board.

ŸReplace the Audio and Battery Function Con- nection Board.

ŸReplace the system board.

TrackPoint		IV	Check
The	TrackPoint		does	automatic	compensations		to	adjust
the	pointer		sensor.	During this		process,	the	pointe
on	the	screen automatically			for	a short	time. This

acting pointer movement can occur when a slight, ste pressure is applied to the TrackPoint pointer while

computer is powered		on or while the system is ru
when	readjustment is	required because the	tempera
has	exceeded its	normal temperature range.	This

symptom does not indicate a hardware problem. No

service		actions are necessary if the pointer move
stops in a short period of time.
If	a	click button problem or pointing stick problem
do	the	following:

1.Boot from the diagnostics diskette and start program (please refer to “Running the PQA Diagno tics Program” on page 49).

ThinkPad i Series 1400 29(Part I)