Scsi Devices Test Group; Subtests - Dell PowerEdge 4200 Installation And Troubleshooting Manual

When a port is faulty, it may not be immediately evident
that the port, and not the device connected to the port, is
faulty. Instead, the peripheral might behave erratically or
not operate at all. If the external device is not properly
installed through the software, it also may not function
properly. Try operating the peripheral from different
programs or through the operating system. If it still does
not work, you can eliminate the software setup as the
cause of the problem.
Another possible cause for errors is the external device.
Use the documentation that came with the peripheral to
troubleshoot the device and confirm that it is working
properly. (Most printers have a self-test.)
After you eliminate incorrect system configuration infor-
mation settings, peripheral malfunctions, and software
errors as potential causes of port problems, you can run
the subtests in the Parallel Ports Test Group to check the
hardware. Although the following symptoms can be
caused by faulty peripherals or software errors, they
might also suggest a port problem:
•
If a peripheral works intermittently or produces
intermittent errors, the port may be faulty.
•
If the computer displays an error message that is
related to the external device connected to a port but
corrections to the device do not resolve the error, run
the appropriate subtest in the Parallel Ports Test
Group.
•
If the software and the diagnostics do not recognize
that you have a parallel port, you should check the
Parallel Port category in the System Setup program
and, if necessary, run the appropriate subtest in the
Parallel Ports Test Group.
S
CSI Devices Test Group
The subtests in the SCSI Devices Test Group check the
functionality of up to four SCSI host adapters and all the
SCSI devices attached to them.
NOTES: Before conducting these subtests on CD-ROM
drives, insert a CD with audio and data tracks (such as a
multimedia CD) into each CD-ROM drive. All of the sub-
tests, except for the Audio Output Test, require a CD with data
tracks. The Audio Output Test requires a CD with audio tracks.
If a CD-ROM drive is empty or if it contains a CD that
does not have the required data or audio tracks (depend-
ing on the subtest[s] being conducted), the subtest(s) will
fail.

Subtests

The seven subtests in the SCSI Devices Test Group and
the drive functions they test follow:
•
Internal Diagnostic
Causes the device to run its internal self-test.
•
Seek Test
Checks the device's ability to search for a specified
track on the device and to position its read/write
heads to all tracks.
•
Read Test
Positions the read/write heads at each block of the
device for reading data and verifies that all tracks on
the device can be read correctly.
•
Write Test
Positions the read/write heads at each block of the
device for writing data and verifies that all tracks on
the device can be written to correctly.
•
Audio Output Test
Causes the CD-ROM drive to begin playing the first
audio track on an audio CD. To determine whether
the test passed, listen to the audio output of the drive.
NOTE: To conduct the Audio Output Test, you must
select it individually. It will not run as part of the test
group.
•
Eject Removable Media
Causes a CD-ROM drive to eject its CD or a SCSI
tape drive to eject its tape cartridge.
•
Display Information
Displays a screen of information about each SCSI
host adapter in the computer, the resources allocated
to each SCSI host adapter, and a list of target devices
attached to the SCSI host adapter.
Running the System Diagnostics 5-17