IBM ThinkPad 240X, Hardware Maintenance Manual

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Note: Signal lines, not used in these steps, are used
for communications between the system and
the battery.
3. If the voltage is less than 10.6V, the battery ASM has
been discharged, recharge the battery ASM. If the
voltage is still less than 10.6V, replace the battery.
TrackPoint Checkout
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:
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 a click button problem or pointing stick problem occurs,
do the following:
1. Boot from the diagnostics diskette and start the
program.
2. Go to Interactive Tests on the main menu and select
Mouse.
3. Follow the instructions in the message window.
If either the pointing stick or the click button does not work,
do the following actions one at a time to correct the
problem. Do not replace a non-defective FRU.
1. Reseat the keyboard Touchbutton cables.
2. Replace the keyboard.
3. Replace the system board.
General Description
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