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Solving Keyboard and Mouse Problems (Continued)
Problem
Keyboard commands and
typing are not recognized
by the computer.
(continued)
Ä
CAUTION: When attempting to resume from standby mode, do not hold down the
power button for more than four seconds. Otherwise, the computer will shut down and
any unsaved data will be lost.
Cursor will not move using
the arrow keys on the
keypad.
Mouse does not respond to
movement or is too slow.
Ä
CAUTION: When attempting to resume from standby mode, do not hold down the
power button for more than four seconds. Otherwise, the computer will shut down and
you will lose any unsaved data.
Mouse will only move
vertically or horizontally, or
movement is jerky.
Service Reference Guide, dc7600
Cause
Keyboard needs
repairs.
Wireless device error.
Computer is in
standby mode.
The Num Lock key
may be on.
Mouse connector is
not properly plugged
into the back of the
computer.
Program in use has
stopped responding
to commands.
Mouse may need
cleaning.
Mouse needs repairs.
Wireless device error.
Computer is in
standby mode.
Mouse roller ball is
dirty.
390742-001
Troubleshooting Without Diagnostics
Solution
Replace the keyboard.
1. Check software, if available, for
device battery status.
2. Replace device batteries.
3. Reset receiver and keyboard.
Press the power button to resume
from standby mode.
Press the Num Lock key. The
Num Lock light should not be on if
you want to use the arrow keys. The
Num Lock key can be disabled
(or enabled) in Computer Setup.
1. Shut down the computer using
the keyboard.
2. Plug the mouse connector into
the back of the computer (or the
keyboard) and restart the
computer.
Shut down the computer using the
keyboard and then restart the
computer.
Remove the roller ball cover on the
mouse and clean it.
Replace the mouse.
1. Check software, if available, for
device battery status.
2. Replace device batteries.
3. Reset receiver and mouse.
Press the power button to resume
from standby mode.
Remove roller ball cover from the
bottom of the mouse and clean it.
D–17
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