Bio-Rad PhosphorImager/Apple G3

Anonymous somebody at genome2.ped-gen.uiowa.edu
Tue Mar 24 11:44:00 EST 1998

Apologies if this message doesn't comprise straight text or if it's scrogged
in other difficult-to-read ways; this is the first time I've posted using this
newsreader (Mozilla)

Michael Irwin wrote:
> Hi Elizabeth,
> I've seen this problem once before on a G3. I believe the culprit then
> was a conflict with the 525 and the internal zip drive. You might
> consider just removing that zip to see how the system works then. I
> would then ask bio-rad Canada to reimburse you for an external
> drive...$150 should be negligible to take care of a valuable imager
> customer.
> As a note, the common link between the 6500 and G3s seems to be that
> both have IDE main drives and their external SCSI chain somehow
> differs from that of other internal-SCSI Powermacs.

If not only the imager was being attached to the SCSI bus by the originator
of this thread then please ignore this

I had problems with a SCSI bus on a PC whereby my internal hard drive refused
to operate when connected (via a 50-pin to 25-pin converter; goofy non-standard
cables) with an external zip drive at the other end of the bus. Putting my
scanner back on the zip's end of the bus, disabling the zip's termination,
and using an external passive terminator aft of the scanner (also goofy 25-pin
thing) resurrected the drive so I've become somewhat suspicious of the termi-
nators in these zips. If the IDE-main-drive-bundled Macs are havings SCSI
trouble and ship with SCSI zips as the only items on their buses and are
using the zips' termination, while, OTOH, the SCSI-main-drive-bundled Macs
don't use the zips' termination, then I would try putting a terminator on the
internal end of the bus, disable the zip's termination, and try re-attaching
the imager (assuming, as with other Macs, that the controller doesn't have some
termination that has to be disabled--by user intervention anyway)

Not that I think that's not an incredible hassle and that I think everybody has
50-pin IDC (I'm assuming) terminators growing among their local tree species

Nor that the problem I had wasn't an artifact limited only to my external zip
drive/incompetence and that I want to be sued by Iomega for defaming their



P.S.--Anybody using a digital camera apart from any value-added biotech-company-
packaged ``system'' to capture gel or other such biological Kodak moments(TM)?
To his/her satisfaction? TIA for a quick ``yes'' or ``no'' or ``you're nuts''

buck huppmann
iowa city, ia, usa
charles-huppmann @uiowa.edu

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