🚀 go-pugleaf

Darnell Barber wrote:

> Hello I recently purchased an adaptec 2906 scsi pci card.  Now it was
> explained to me that any scsi could work with the Scanjet 4p.
>
> Yet after everything is installed and there are no "device conflicts" I seem
> to be continuosly getting the same error message when I run a test.
>
> Now, there is an interrupt button on the back of the Flatebed (sic) Scanner
> that allows you to change numbers from 1-7.  Frankly I have no idea what it is
> for but nevertheless I've changed the numbers sequentialy with no results.

  I'm going to assume, since you state that you don't know what the "interrupt
button...that allows you to change numbers from 1-7" is for, that SCSI itself is
pretty much a mystery to you.

  First of all, the "interrupt button...that allows you to change numbers from
1-7" is to set the SCSI ID of the scanner.  On a SCSI chain, every device must
have a unique ID number, from 0 to 7.  Usually, the computer itself (or rather
the SCSI interface in the computer) is 7, leaving 0-6 for the other devices.
So, assuming that you've got the 2906 set to have the ID of 7, and that the
scanner is the only other SCSI device, you should be OK to set the scanner to
any ID other than 7.

  Early in the power-up sequence, your computer should probably display a blurb
on the screen telling you to hit Ctrl-A if you want to configure the SCSI
interface.  You should probably do so, so that you can verify that the card is
configured to be ID 7, or at least that it is not the same ID that you are
setting the scanner to be.

  While you're there, check to termination setting.  Some Adaptec SCSI cards
have an "automatic" setting, which is what I recommend if it's available  In the
event that there is not an "Automatic" setting, termination should be "off" or
"disabled" if you have both internal and external devices connected to the card,
and it should be "on" or "enabled" if you only have external devices, or only
have internal devices, but not both, connected to the card.  (Hint:  If you're
only using it to interface to the scanner, then you have only an external
device, and termination at the card should be "on" or "enabled".)

  Finally, you need to have a terminator installed at the end of the SCSI
chain.  This probably means your scanner.  Some SCSI devices have built-in
terminators, which can be turned on or off by flipping a switch or setting
jumpers.  I know that some recent HP scanners only have one SCSI connector,
forcing them to be at the end of the chain, and of course, have internal
termination that is always on.  I think most HP scanners, including yours, have
no terminator at all built in, and you'll need to get an external terminator to
put on your scanner.  If I am correct, then your scanner has two SCSI
connectors.  You've got a cable connected from one of these connectors to the
Adaptec 2906, and the other connector probably has nothing on it.  Go to your
favourite computer store, and tell the salesdroid that you need a SCSI
terminator.  Have him show it to you before you buy it, and make sure that it
has the connector which would mate to the open connector on your scanner.  There
are about three or four different kinds of connectors that are commonly used for
SCSI.  If the one he shows you doesn't look like it would fit, tell him that's
the wrong connector and ask him to show you one with a different connector.
After a few cycles of this, at most, you should have the correct terminator.
Take it home, and stick it on the open connector on your scanner.

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