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Troubleshooting Symptom Charts/Hard Drive - 14
Hard Drive
Single internal hard
drive does not
operate; drive
doesn’t spin
1 Check the SCSI and hard drive power cable connections.
2 Replace hard drive power cable.
3 Replace hard drive. (Note: If replacing an Apple WS 8150
RAID drive, you must reinstall the RAID software on the
drive. See “RAID Information” in Basics.)
4 Replace power supply.
No internal SCSI
drives operate
1 Verify there are no duplicate SCSI device addresses.
2 Replace SCSI data cable.
3 Replace power supply.
4 Replace logic board. Retain customer’s SIMMs.