Lenovo R50 Series manual UltraNav problems

Solving computer problems

2.Remove the external numeric keypad or the mouse.

3.Turn on the computer and try using the keyboard again.

If the keyboard problem is resolved, carefully reconnect the external numeric keypad, external keyboard, or mouse, making sure that you have seated the connectors properly.

If keys on the keyboard still do not work, have the computer serviced.

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 Dock II, the ThinkPad Mini Dock, or the ThinkPad Port Replicator II, 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 during normal operation. This is a normal characteristic of the TrackPoint and is not a defect. Pointer drifting might occur for several seconds under the following conditions:

vWhen the computer is turned on.

vWhen the computer resumes normal operation.

vWhen the TrackPoint is pressed for a long time.

vWhen the temperature changes.

20ThinkPad® R50 Series Service and Troubleshooting Guide