Service manual

Running the Dell Diagnostics: Dell Latitude CP
● Audio Output Test
Causes the drive to begin playing the first audio track on an audio CD. (To determine if
the test passed, listen to the audio output of the drive.)
NOTE: The Audio Output Test does not run automatically as part of the IDE
CD ROM Drives test group; you must select this subtest individually.
● Eject Removable Media
Checks the drive's ability to eject the CD tray.
Serial/Infrared Ports Test Group
The subtests in the Serial/Infrared Ports test group check the computer's interface with
external devices (such as a serial mouse or a printer). The subtests in this test group are not
intended as a diagnostic test for the external device itself.
Why Run a Serial/Infrared Ports Test?
It may not be immediately evident whether the port or the external device is faulty. In both
cases, the external device (such as a serial mouse or a printer) might behave erratically or not
operate at all. Eliminate incorrect system configuration information settings, peripheral
malfunctions, and software errors as potential causes of infrared (IR) port problems, before
you run the subtests in the Serial/Infrared Ports test group to check your hardware.
If the diagnostics do not recognize the computer's serial or infrared port, check the Serial Port
or Infrared Data Port option in System Setup program to see if the port has been disabled. For
instructions, see "Serial Port," "Infrared Data Port," or " Parallel Mode". The subtests in the
Serial/Infrared Ports test group cannot test a port unless it is enabled.
Another possible cause for errors is a problem with the external device itself. Use the
documentation that came with the peripheral to troubleshoot it and confirm that it is working
properly.
Also, if the external device is not properly installed through software, the device may not
function properly. Try operating the device from different programs or through the operating
system. If it still does not work, you can eliminate the software configuration as the cause of
the problem.
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