Apple WS 9650 Manuale Utente

Pagina di 237
 
 Troubleshooting
Symptom Charts/Problems with Jack•Hammer Ultra SCSI Card 
 
Problems with Jack•Hammer Ultra SCSI Card or 
Devices Attached to It
 
This section covers problems you may experience when the 
Jack•Hammer Ultra SCSI card is installed in the WS 9650.
SCSI signal degrada-
tion, including:            
1)Devices attached to 
JackHammer do not 
appear on Desktop 
2)System hangs or 
freezes                       
3) System has bootup 
problems (primarily 
a blank gray screen) 
4)Slow performance
1 Check each device and make sure all have unique SCSI IDs.
2 Make sure all devices at ends of the SCSI bus are properly 
terminated.
3 Make sure all cables are securely connected. (Incorrectly 
seated cables may exhibit burn marks.)
4 Make sure JackHammer is securely seated in its slot.
5 Open PCI SCSI JackHammer Control Panel and see if 
JackHammer appears in scroll box. If not, conduct 
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).