IBM manual 39

If any of the above devices do not work, reseat the ca connector and repeat the failing operation.

If the problem does not occur again, recheck the connector.

If the problem is not corrected, replace the device, and then the system board.

TrackPoint		II	and	III	Checkout
If the TrackPoint II or III will not work, check the
configuration			in Easy-Setup by			selectingKeyboard	from
theConfig		menu. If			the configuration of the TrackPoint II
or	III	is	disabled,TrackPoint selectto			enable it.
If	this	does not			correct the TrackPoint II or III prob
continue		with	the	following.

The TrackPoint II or III 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 II or III while the computer is powered on or while the system is running, or re-adjustment is required because the temperature has exceeded its normal operating 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.

Go to the Easy-Setup screen.

2.

Select

an item

with

the

pointing

stick.

3.

Press either the left or right click button.

4.

Verify that both buttons work correctly.

If

either

the

pointing

stick

or

the

click

button

will not w

do

the

following

actions

one

at a

time

to

correct

the

problem.

Do

not

replace

a

non-defective

FRU.

Ÿ Reseat the three keyboard cables.

ŸReplace the keyboard.

ŸReplace the system board.

Diskette		Drive		Test
Do	the following				to	isolate the problem to a controller,
drive, or diskette. A scratch,							write		enabled,	non-defective
2HD	diskette		is		required.
Note:	Make	sure			that	the diskette does not have more
	than	one		label		attached	to	it. Multiple labels			can
	cause		damage			to the drive		or	can cause	the	drive
	to	fail.

1. Do following to select the test device:

	Ÿ Select	the	advanced diagnostic mode and select
	Tool ; then		select theFDD iconand press the
28	IBM Mobile	Systems HMM