Dell OptiPlex NX1 Diagnostics and Troubleshooting Guide (.pdf) - Page 80
Troubleshooting a SCSI Tape Drive
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6. Turn off the system, including any attached peripherals, and disconnect all the AC power cables from their power sources. Also, disconnect any telephone or telecommunication lines from the computer. 7. Remove the computer cover. CAUTION: See "Protecting Against Electrostatic Discharge" in the safety instructions at the front of this guide. 8. Check the interface cable connections to the tape drive and to the interface connector on the system board or the controller card (if one is installed). Check the DC power cable connection to the tape drive. Are the cables firmly connected? Yes. Go to step 10. No. Go to step 9. 9. Reseat the cable connectors, replace the computer cover, reconnect the system to AC power, and turn it on. Is the problem resolved? Yes. The connections were loose. You have fixed the problem. No. Go to step 10. 10. Turn off the system, disconnect it from AC power, and remove the computer cover. 11. Remove the tape drive, and ensure that the input/ output (I/O) address and IRQ jumper settings do not conflict with any other device's settings. See "Avoiding Interrupt Assignment Conflicts" in Chapter 3. For information on setting the jumpers, see the documentation for the tape drive. Are the drive's jumpers positioned correctly? Yes. Go to step 13. No. Go to step 12. 12. Correct the drive's jumper settings according to the documentation for the tape drive, and reinstall the tape drive. 13. Replace the computer cover, reconnect the system to AC power, reconnect any telephone or telecommunication lines, and turn on the computer. Is the problem resolved? Yes. The IRQ jumper settings were incorrect. You have fixed the problem. No. See Chapter 7, "Getting Help" for instructions on obtaining technical assistance. Troubleshooting a SCSI Tape Drive A SCSI tape drive can be either an internal device installed in one of the externally accessible drive bays or an external device that attaches to a SCSI host adapter connector on the back panel of the computer. In either case, the SCSI tape drive is controlled by a SCSI host adapter installed in the computer, which may also control other SCSI devices connected to one or more SCSI cables. SCSI devices sometimes require device drivers for the particular operating system being used by the computer system. Tape drive problems often result from a defective tape drive, a defective tape cartridge, or software. Follow these steps to troubleshoot a SCSI tape drive: 1. Remove the tape that was in use when the problem occurred, and replace it with a tape that you know is not defective. Is the problem resolved? Yes. The original tape was defective. Replace it with a new tape. You have fixed the problem. No. Go to step 2. 2. Remove any installed TSR programs. See "Memory-Resident Programs" in Chapter 3 for information about unloading TSR programs. Is the problem resolved? Yes. The TSR program was conflicting with the tape backup software. You have fixed the problem. No. Go to step 3. 6-12 Diagnostics and Troubleshooting Guide