Troubleshooting Charts
Problem Action
The mouse buttons do
not work.
Reinstall the Standard PS/2 Port Mouse driver; then reinstall the PS/2 TrackPoint
driver. See the online user's guide for instructions on how to install the driver.
The scrolling or Magni-
fying Glass function
does not work.
See the General tab page in "Mouse Properties", and make sure that the PS/2
TrackPoint driver is loaded.
A number appears when
you type a letter.
The numeric lock function is on. To disable it, press and hold Shift; then press
NumLk.
All or some keys on the
external numeric keypad
do not work.
Make sure that the external numeric keypad is correctly connected to the com-
puter.
All or some keys on the
external keyboard do
not work.
To use an external keyboard, you can attach it to the computer either directly or
through the keyboard/mouse cable. Make sure that:
The keyboard cable is correctly connected to the computer (if the keyboard is
connected directly to the computer).
The keyboard/mouse cable is correctly connected to the computer.
The keyboard cable is connected to the correct side of the keyboard/mouse
cable.
If these items are correct, disconnect the keyboard/mouse cable from the com-
puter and make sure that the operation of the system keyboard is correct. If the
system keyboard works, have the keyboard/mouse cable or the external keyboard
serviced.
114 ThinkPad 390X User's Reference
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