International Business Machines Corporation CORN1TASULIV Manuel D’Utilisation

representative to have the system board replaced. Proof of purchase is
required, and a fee will be charged for parts and service.

A power switch problem

Problem:

The system does not respond, and you cannot turn off the computer.

Solution:

Turn off the computer by pressing and holding the power switch for

4 seconds or more. If the computer is still not reset, remove the ac adapter
and the battery.

Keyboard problems

Problem:

The cursor does not move after the computer returns from one of

the power management modes.

Solution:

Make sure you followed the instructions correctly when you

installed Windows with the Advanced Power Management (APM) option.

Note:

The APM option is supported in Windows 95, Windows 98, and
Windows NT

Problem:

Some or all of the keys on the keyboard do not work.

Solution:

If the problem occurred immediately after the computer returned

from standby mode, enter the power-on password if any is set.

If an external keyboard is connected, the numeric keypad on your computer
does not work. Use the numeric keypad on the external keyboard.

If an external numeric keypad or a mouse is connected:

Turn off the computer.

Remove the external numeric keypad or the mouse.

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 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.

Solving computer problems

ThinkPad

T30 Series Service and Troubleshooting Guide