Ultranav Problems - IBM ThinkPad R40 series Service Manual

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Solving computer problems

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 any keys on the keyboard still do not work, have the external numeric

keypad, external keyboard, or mouse 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: Some or all 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 keyboard do not work.

Solution: If you are using ThinkPad Port Replicator, Port Replicator II or

MiniDock, 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.

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UltraNav

problems

Problem: The cursor drifts when the computer is turned on or after it resumes

normal operation.

Solution: The cursor 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. It will cease in several seconds, if you wait without touching

TrackPoint. Cursor 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 is pressed for a long time.

v When the temperature changes.

Chapter 2. Solving computer problems

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