Apple WS 9650 manual

Troubleshooting	Symptom Charts/Problems with Jack•Hammer Ultra SCSI Card
		prepare to boot from a drive not connected to Ultra SCSI
	•	bus).
		Shut down computer and disconnect all cables from PCI
	•	SCSI JackHammer card.
		Restart computer while pressing Command-Option-J.
	•	Open Control Panel folder and hold down Command key
		while double clicking on PCI SCSI JackHammer control
		panel. If diagnostic points to problem with PCI SCSI
		JackHammer card, replace JackHammer card.

You are unable to	1	Verify there are no duplicate SCSI IDs.
successfully write	2	Make sure JackHammer is securely seated in its slot.
data, or data appears	3	Open PCI SCSI JackHammer Control Panel and see if
corrupted when		JackHammer appears in scroll box. If not, conduct
viewed		JackHammer self-diagnosis as follows:
		• Load CD-ROM system disc that came with WS 9650 (or
		prepare to boot from a drive not connected to Ultra SCSI
		bus).