Hey HP experts and enthusiasts

From: Russ Blakeman <rhblake_at_bbtel.com>
Date: Mon Jul 13 11:29:09 1998

So does anyone have an interest in these since Joe has figured out what they
are? The eject mechanism on them is in good shape, no gummy grease. I know the
grease he's talking about as I've seen it on Mac drives eject motor and arm.

Joe wrote:

> At 10:39 PM 7/12/98 -0700, you wrote:
> >Russ Blakeman <rhblake_at_bbtel.com> writes:
> >> I have two box type units labeled as an HP9123D that appear to have two
> >> 3.5" type removable (floppy?) drives in each, with an HPIB bus connector
> >> and a cable with a 5 pin DIN on the end. It also states that it's for
> >> use only with the HP45849A.
> >
> >Hmm, is that the p/n for a Touchscreen II aka HP150 with 12-inch
> >display? I know those have the 5-pin DIN connector inside and the
> >9123 would be contemporary, can't remember if the ones we had at
> >University of Maryland hooked up that way or not though.
> >
> >-Frank McConnell
> Yeap, they're for the TS II (Touch Screen II). That's the only machine
> that they'll work on. The 9123 is exactly the same as a 9122 except it
> doesn't have a power supply. The DIN plug is to supply power to the drives.
> BUT you can add an external power supply and then you can use them just
> like regular HP 9122 drives.
> BTW ******BIG WARNING****** I have found that the double sided
> drives like those used in the 9122, 9122, 9133, etc are prone to hanging up
> and not raising the discs completely when you try to eject a disc. If you
> force the disc out or insert a disc, you will almost certainly rip the top
> head off the drive. The problem is caused by the grease that was used on
> the drive machanism, it gets dry and gummy with age and binds the
> mechanism. When you use those drives, watch and be certain that the drive
> opens completely before removing or inserting a disk.
> Joe
> >

 Russ Blakeman
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Received on Mon Jul 13 1998 - 11:29:09 BST

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