Dell OptiPlex Gn Diagnostics and Troubleshooting Guide (.pdf) - Page 86
nector. See Getting Help, for, SCSI ID cable.
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11. Check the SCSI ID switch settings on the back of the SCSI backplane board to verify that each drive bay is configured for a unique SCSI ID and that none of the SCSI IDs conflict with the SCSI ID for the SCSI host adapter. See your system documentation for the recommended SCSI ID switch settings. Is the drive bay configured for a unique SCSI ID? Yes. Go to step 13. No. Go to step 12. 12. Change the SCSI ID switch settings so that each drive bay is configured for a unique SCSI ID that does not conflict with the SCSI host adapter. Turn off the computer, wait a few seconds, then turn it back on. Is the problem resolved? Yes. The drive bay was configured incorrectly. You have fixed the problem. No. Go to step 13. CAUTION: Removing the jumper plug from the READ_ONLY jumper pins and then reinstalling the drive with the system turned on will cause all data on the drive to be erased. To preserve the data on the drive, either turn off the system, reinstall the drive, and then turn on the system, or do not reinstall the drive. 13. Remove the drive carrier from its bay, and check all cable connections between the drive and the drive carrier. Also make sure that the SCSI ID cable is oriented correctly and is installed on the correct set of pins on the drive. Reinstall the drive carrier in its bay. Verify that a jumper plug is not installed on the READ_ONLY jumper pins on the interface board. Then press the release button on the front of the drive carrier. See your system documentation for information on cable connections and the correct installation of the SCSI ID cable. Does the online light-emitting diode (LED) blink and then stay on? Yes. The drive carrier was not firmly seated in the connector on the SCSI backplane board, or one of the cables in the drive carrier was installed incorrectly. You have fixed the problem. No. Go to step 14. 14. Remove the drive carrier and install it in another drive bay. Is the problem resolved? Yes. The SCSI backplane board has a defective connector. See Chapter 7, "Getting Help," for instructions on obtaining technical assistance. No. Go to step 21. 15. Check the online indicator on the front of each hard-disk drive carrier. Is the online indicator on for each drive carrier? Yes. Go to step 19. No. Go to step 17. 16. Check the SCSI ID switch settings on the back of the SCSI backplane board to verify that each drive bay is configured for a unique SCSI ID and that none of the SCSI IDs conflict with the SCSI ID for the SCSI host adapter. See your system documentation for the recommended SCSI ID switch settings. Is the drive bay configured for a unique SCSI ID? Yes. Go to step 19. No. Go to step 18. 17. Change the SCSI ID switch settings so that each drive bay is configured for a unique SCSI ID that does not conflict with the SCSI host adapter. Turn off the computer, wait a few seconds, then turn it back on. Is the problem resolved? Yes. The drive bay was configured incorrectly. You have fixed the problem. No. Go to step 19. 6-18 Diagnostics and Troubleshooting Guide