Service manual

Running the Dell Diagnostics: Dell Latitude CP
IDE CD ROM Drives Test Group
The subtests in the IDE CD ROM Drives test group check the functionality of the integrated
drive electronics (IDE) CD-ROM drive. Before conducting an IDE CD ROM test, insert into the
drive a CD with audio and data tracks (such as a multimedia CD).
NOTE: The Audio Output Test requires a CD with audio tracks; all other subtests in
this test group require a CD with data tracks. If the CD-ROM drive contains a CD
that does not have the required data or audio tracks, the subtest fails.
Why Run an IDE CD ROM DrivesTest?
If you encounter a problem while using an application program on a CD, the problem could
result from the disc or from the drive. When you encounter problems, first try using a different
CD. If the problem recurs, run the IDE CD ROM Drives test group.
These are the most common symptoms that might prompt you to test an IDE CD-ROM drive:
● Seek errors are reported by the operating system or application programs.
● An error message appears on the screen stating that the computer cannot read from an
IDE CD-ROM drive.
Subtests
The five subtests in the IDE CD ROM Drives test group confirm the following drive functions:
● Drive Controller Test
Causes the drive to execute its internal self-test.
● Seek Test
Checks the drive's ability to search for each block on the device.
● Read Test
Positions the read heads at each block of the device for reading data and verifies that all
blocks on the device can be read correctly.
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