IBM 390 用户指南
Troubleshooting Charts
Input Problems
Problem
Action
The cursor does not
move after the comptuer
awakens from one of
the power management
modes.
move after the comptuer
awakens from one of
the power management
modes.
Make sure you followed the instructions in the Online User's Guide correctly when
you installed Windows with the Advanced Power Management (APM) option.
you installed Windows with the Advanced Power Management (APM) option.
All or some keys on the
keyboard do not work.
keyboard do not work.
If the problem occurred immediately after the computer returned from suspend
mode, enter the power-on password if it set.
mode, enter the power-on password if it set.
If an external keyboard is connected, the numeric keypad on your computer
will not work. This is not a defect.
will not work. This is not a defect.
If an external numeric keypad or a 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 solved, check the connection of the external
numeric keypad, external keyboard, or mouse.
numeric keypad, external keyboard, or mouse.
If you still have a problem, have the computer serviced.
The cursor drifts when
the computer is turned
on or after it resumes
normal operation.
the computer is turned
on or after it resumes
normal operation.
The cursor might drift when you are not using the TrackPoint during normal opera-
tion. This is a normal characteristic of the TrackPoint and is not a defect. Cursor
drifting might occur for several seconds under the following conditions:
tion. This is a normal characteristic of the TrackPoint and is not a defect. Cursor
drifting might occur for several seconds under the following conditions:
When the computer is turned on.
When the computer resumes normal operation.
When the TrackPoint is pressed for a long time.
When the temperature changes.
The mouse or pointing
device does not work.
device does not work.
Make sure that the pointing device is enabled in the ThinkPad Configuration
program.
program.
Make sure that the mouse or pointing-device cable is securely connected to
the computer.
the computer.
Try using the TrackPoint. If the TrackPoint works, the error might be due to
the mouse.
the mouse.
Disable the TrackPoint using the ThinkPad Configuration program if you use
an external mouse.
an external mouse.
Note: See the manual supplied with the mouse for more information.
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ThinkPad 390 User's Reference