Dell PowerEdge 4300 Dell PowerEdge 4300 Systems Installation and Troubleshooti - Page 77
Parallel Ports, Parallel Port, SCSI Devices, Internal Diagnostic, Seek Test, Read Test, Write Test
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After you eliminate incorrect system configuration information 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, check the Parallel Port setting in the System Setup program and, if necessary, run the appropriate subtest in the Parallel Ports test group. The subtests in the SCSI Devices test group check the functionality of up to four small computer system interface (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 subtests, 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 (depending on the subtest[s] being conducted), the subtest(s) will fail. 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. Running the Dell Diagnostics 5-23