Dell Latitude LM - Manual (Page 55)

Troubleshooting Your Computer 3-21
Troubleshooting the Infrared Port
This section provides a procedure for troubleshooting the
computer’s infrared (IR) port.
Make a copy of the Diagnostics Checklist found in Chap-
ter 5, and fill it out as you complete the following
procedure:
1. Check the setting for the INFRARED option in the
Peripherals menu of the Setup program.
For information on the Setup program, see the topic
titled “Setup Program” in the online System User’s
Guide. Is the
INFRARED option set correctly for the
external device with which you are communicating?
Yes. Go to step 3.
No. Go to step 2.
2. Change the INFRARED option to the appropriate
settings, and then reboot the system.
Is the problem resolved?
Yes. The problem is resolved.
No. Go to step 3.
3. Insert your diagnostics diskette into drive A,
reboot the computer, and run the Serial/IR Ports
Test Group in the Dell diagnostics. (See Chapter 4,
“Running the Dell Diagnostics.”) Do the tests
complete successfully?
The Serial/Infrared Ports Test Group checks the
basic functions of the computer’s infrared logic.
Yes. The infrared port is functioning properly. There
may be a problem with the infrared application pro-
gram or with the external device. Check the
documentation that came with the application pro-
gram and with the external device.
No. Call Dell for technical assistance. (See Chap-
ter 5, “Getting Help,” for instructions.)
Troubleshooting the Touch Pad
This section provides a procedure for troubleshooting the
computer’s built-in touch pad.
Make a copy of the Diagnostics Checklist found in Chap-
ter 5, and fill it out as you complete the following
procedure:
1. Check the setting for the TOUCH PAD option in the
Peripherals menu of the Setup program.
For information on the Setup program, see the topic
titled “Setup Program” in the online System User’s
Guide. Is the
TOUCH PAD option set to ENABLED ?
Yes. Go to step 3.
No. Go to step 2.
2. Change the TOUCH PAD option to ENABLED , and
then reboot the system. Does the touch pad work
properly?
Yes. The problem is resolved.
No. Go to step 3.
3. Insert your diagnostics diskette into drive A,
reboot the computer, and run the Mouse Test in
the Dell diagnostics. (See Chapter 4, “Running
the Dell Diagnostics.”) Do the tests complete
successfully?
The Mouse Test checks the functionality of the
mouse controller (which affects the ability to move
the pointer around the screen) and the operation of
the touch pad buttons.
Yes. The controller is functioning properly. If the
problem persists, call Dell for technical assistance.
(See Chapter 5, “Getting Help,” for instructions.)
No. Call Dell for technical assistance. (See Chap-
ter 5, “Getting Help,” for instructions.)