Lenovo Z60T - Manual (Page 44)

Problem:
A number appears when you type a letter.
Solution
The numeric lock function is on. To disable it, press and hold Shift; then
press NumLk.
Problem:
All or some of the keys on the external numeric keypad do not work.
Solution:
Make sure that the external numeric keypad is correctly connected to the
computer.
Problem
Some or all of the keys on the external PS/2 keyboard do not work.
Solution
If you are using the ThinkPad Advanced Dock, the ThinkPad Advanced
Mini Dock, or the ThinkPad Essential Port Replicator, make sure that the
keyboard cable is correctly connected to the keyboard connector.
If the connection is correct, disconnect the cable and make sure that the
built-in keyboard operates properly. If the built-in keyboard works, there is
a problem with the external keyboard. Try using a different external
keyboard.
UltraNav problems
Problem:
The pointer drifts when the computer is turned on or after it resumes
normal operation.
Solution:
The pointer might drift when you are not using the TrackPoint pointing
device during normal operation. This is a normal characteristic of the
TrackPoint pointing device and is not a defect. Pointer drifting might occur
for several seconds under the following conditions:
v When the computer is turned on.
v When the computer resumes normal operation.
v When the TrackPoint pointing device is pressed for a long time.
v When the temperature changes.
Problem:
The mouse or the pointing device does not work.
Solution:
Make sure that the TrackPoint pointing device and the touch pad are set to
Automatic in the ThinkPad Configuration Program. Then detach the
mouse or the pointing device, and try using the TrackPoint pointing device
Solving computer problems
22 ThinkPad ® Z60t and Z60m Series Service and Troubleshooting Guide