IBM ThinkPad 760C, Руководство по обслуживанию

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What If Your Computer Does Not Work?
Keyboard, External Numeric Keypad, and Pointing Device Problems
Problem Action
All or some keys on the
system keyboard do not
work. If the problem occurs immediately after the computer returns to normal
operation from suspend mode, enter the power-on password. If a power-on
password is set, you must enter the password.
If the external keyboard is connected, the numeric keypad on the system
keyboard will not work.
If the external numeric keypad or the mouse is connected:
1. Turn off the computer.
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, check the connection of the external
numeric keypad, external keyboard, or the mouse. If there is still a problem,
have the computer serviced.
The pointer drifts when
the computer is turned on,
or after resuming normal
operation.
—or—
During computer
operation, the pointer
drifts when not using the
TrackPoint III.
Drifting is a characteristic of the TrackPoint III and is not a defect. The drifting
occurs for several seconds under the following conditions:
When the computer is turned on.
When resuming normal operation.
When the TrackPoint III is pressed for a long period of time.
When the environmental temperature changes.
Do not touch the TrackPoint III until the pointer stops moving.
The mouse or pointing
device does not work. Verify that the mouse or pointing-device cable is securely connected to the
computer.
Try using the TrackPoint III. If the TrackPoint III works, suspect the
externally attached pointing device.
If you are using Windows, make sure Computer is set as MS-DOS System
with APM. See page 198.
If you are using a mouse that is not compatible with the IBM PS/2 Mouse,
disable the TrackPoint III using the ThinkPad Features program.
1. For OS/2 and Windows, see page 39. Select Setup,
Keyboard/Pointing Device; then click on Disable for the TrackPoint III.
2. For DOS, see page 42.
All or some keys on the
external numeric keypad
do not work. Verify that the external numeric keypad is correctly connected to the computer.
Chapter 8. Solving Computer Problems
229