Dell Latitude Xpi CD - Manual (Page 69)

Troubleshooting Your Computer 3-29
NOTE: Before you begin this procedure, make sure that
the
SYSTEM SWITCH option in the System Setup program is
set to ON/OFF . For instructions, see “Using the System Setup
Program” in Chapter 2.
1. Turn off the computer and the serial device, and
swap the interface cable (which connects the device
to the serial port) with a comparable working cable.
2. Turn on the parallel printer and computer.
3. Attempt a print operation on the parallel printer.
Does the print operation complete successfully?
Yes. You probably need a new interface cable. Call
Dell for technical assistance. See Chapter 5, “Getting
Help,” for instructions.
No. Continue to step 4.
4. Run the parallel printer’s self-test.
Does the self-test complete successfully?
Yes. Continue to step 5.
No. The printer is probably defective. If you bought
the printer from Dell, call Dell for technical assis-
tance. (See Chapter 5, “Getting Help,” for
instructions.) If you bought the printer elsewhere,
take it to one of the manufacturer’s authorized ser-
vice centers for repair.
5. Attempt another print operation on the parallel
printer.
Does the print operation complete successfully?
Yes. The problem is resolved.
No. Call Dell for technical assistance. See Chapter 5,
“Getting Help,” for instructions.
Troubleshooting a Serial I/O Device
If the procedure titled “Troubleshooting the Basic I/O
Functions” found earlier in this section indicates that the
problem is with a device connected to one of the serial
ports, use the following procedure.
NOTE: Before you begin this procedure, make sure that
the
SYSTEM SWITCH option in the System Setup program is
set to ON/OFF . For instructions, see “Using the System Setup
Program” in Chapter 2.
1. Turn off the computer and the serial device, and
swap the interface cable (which connects the device
to the serial port) with a comparable working cable.
2. Turn on the computer and the serial device.
Is the problem resolved?
Yes. You probably need a new interface cable. Call
Dell for technical assistance. See Chapter 5, “Getting
Help,” for instructions.
No. Continue to step 3.
3. 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.
4. 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 Chapter 5,
“Getting Help,” for instructions.
Troubleshooting the Infrared Ports
This section provides a procedure for troubleshooting the
computer’s infrared ports. Use the following procedure to
check one port at a time.
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 DATA PORT
option in the System Setup program.
For information on the System Setup program, see
Chapter 2, “Customizing System Features.” Is the
INFRARED DATA PORT option set correctly for the
external device with which you are communicating?
You may need to check the documentation that
accompanied the device to determine the proper
setting.
Yes. Go to step 3.
No. Go to step 2.