Quantum SDLT320 on Adaptec 19160 running Symantec Backup Exec 12.5 - "No Devices Error"

We have a Quantum SDLT320 on Adaptec 19160 running Symantec Backup Exec 12.5on Windows XP Pro. Symantec says there are no devices to be added - and the Tape drive doesn't appear in the BIOS SCSI scan. The drive is terminated, and is the only device on the chain.

I'm stumped... any ideas?
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Check cabling, adapter, terminator. Also check to make sure that IF anything else is on the SCSI bus, like HDDs, that the SCSI ID's must be set to unique values. ALso remember that the SCSI adapter itself has a settable SCSI ID.

Just stay at the BIOS level, no need to boot to XP.  If the BIOS does not see it, then XP certainly won't.    Got to the ALT-A, (or CTRL-A, can't remember) setup screens of the adaptec, and try resetting card to defaults also.  
cdicenteAuthor Commented:
I've reset the card to defaults, set the SCSI ID to 3 on the Drive - still nothing in the scan. I've tried 2 different cables and 2 different terminators, just to be safe. The drive and card were both pulled from a working machine.
Then there are only 2 thing left to consider
 .. visually inspect for bent/broken pins
 .. either the card or the tape drive is now broken.

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cdicenteAuthor Commented:
The internal cable for the drive was defective - thanks for the help!
Pins .. makes sense, pardon the pun .. glad it was OK.  In general SCSI is pretty bullet proof, and extremely flexible, as you found out when it comes to cabling options.
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