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Dell Inspiron 3000 Reference and Troubleshooting Guide
4.
Turn off the computer and the serial device, and 
swap the device with a comparable working 
device.
For example, if your serial mouse has a problem, 
swap it with a serial mouse you know is working 
properly.
5.
Turn on the computer and the serial device.
Is the problem resolved?
Yes. You probably need a new device. 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.) 
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 Port option in 
the System Devices menu of the Setup program. 
For information on the Setup program, see Chap-
ter 2, “Customizing System Features.” 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 Port option to the appropri-
ate setting, 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 PS/2 Mouse option in 
the System Devices menu of the Setup program. 
For information on the Setup program, see Chap-
ter 2, “Customizing System Features.” Is the PS/2 
Mouse option set to Enabled?
Yes. Go to step 3.
No. Go to step 2.
2.
Change the PS/2 Mouse 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.)
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