IBM ThinkPad 340 Series Hardware Maintenance Manual page 158

Keyboard and TrackPoint III Symptoms
Symptom/Error
Keyboard (one or more
keys) does not work.
TrackPoint III does not work
or the pointer moves
automatically ("drifts") or
does not work correctly.
MultiPort II Related Symptoms
Before testing or replacing the MultiPort II, ensure that the
customer installed the MultiPort II while the computer was
powered-off or in Suspend mode. Make sure the problems
occur when the MultiPort II has been installed correctly.
Symptom/Error
Devices connected to the
MultiPort II do not work
correctly.
Problems occur when the
MultiPort II is connected or
removed (unlatched).
Power problems occur when
the MultiPort II is connected
to the computer.
148
IBM Mobile Systems HMM
FRU/Action
1. Reseat the two larger
keyboard cables.
2. Keyboard.
3. Top System Board.
1. Go to "TrackPoint III
Checkout" on
page 132.
FRU/Action
1. Check the device
connectors to make
sure that they are
connected correctly.
2. Check the cables to
make sure they are not
defective or damaged.
3. Go to "MultiPort II
Checkout" on
page 134.
1. Verify that the
MultiPort II is
correctly seated and
that the latches are
engaged properly.
2. Go to "MultiPort II
Checkout" on
page 134.
1. Remove and then
reattach the AC
adapter to the
computer or the
MultiPort II.
2. MultiPort II.
3. Top System Board.