Q: Digital DSP3210 2gb jumper settings?

[Geoffrey]

Greetings, net.denizens!

I have sitting next to me a most unusual gift - I've been given this
Digital Equipment Corp (DEC) hard drive chamber, model DSP 3210 with
capacity of 2.05 gigabytes. It's just over 3 years old and judging by
the scream it makes whilst its running, its a *fast* 2 gig, so I'd like
to get it running again.

The problem I have, dear reader, is that I don't have any tech notes for
this little black beauty. DEC have been most unhelpful, and the original
owner kindly threw away the settings booklet that came with the chamber
many moons ago.

I've managed to figure out the SCSI ID pins and the auto-start jumper,
but the rest are a mystery. There's ten pairs along the front edge of
the drive (3 for ID, 1 for motor start, an unknown pair would be for the
activity LED I imagine) and another set of 3 pairs on the PCB next to
the SCSI connector.

Any information you could send my way (via news or mail) would be most
appreciated, as I don't really want to go any further until I find out
what the other 11 jumper pairs do.

Brains

--
I'm under-worked, I fix Macs for a living! bra...@macedge.dotat.com

[George Warner]

In article <1997092319...@ppp15.adl.auslink.net>,
bra...@macedge.dotat.com (Geoffrey) wrote:

Your timing is impeccable. I just happen to have the installation
guide on my desk in front of me.

The 3 pairs on the PCB next to the SCSI connector are the termination
header.
Pair 1 (furthest from SCSI connector) drive provides termination power
Pair 3 (closest to SCSI connector) active termination enabled

Here are the pinouts for the 10 pairs:
1-2 SCSI ID 1 (2 is ground)
3-4 SCSI ID 2 (4 is ground)
5-6 SCSI ID 4 (6 is ground)
7 FLT_OUTL (Fault LED signal)
9-10 Pin 9 is BSY_OUTL (Busy), Pin 10 is alternate spindle sync
11-12 Pin 11 is +5V
13-14 Spin Delay or Write Protection (depends on drive, I think)
15-16 AC_LOWL - warns drive of impending AC failure
17-18
19-20 Spindle Sync (20 is ground)

George Warner
warn...@loveboat.com

[hei...@ecs.umass.edu]

In Article <1997092319...@ppp15.adl.auslink.net>

bra...@macedge.dotat.com (Geoffrey) writes:
>Greetings, net.denizens!
>
>I have sitting next to me a most unusual gift - I've been given this
>Digital Equipment Corp (DEC) hard drive chamber, model DSP 3210 with
>capacity of 2.05 gigabytes. It's just over 3 years old and judging by
>the scream it makes whilst its running, its a *fast* 2 gig, so I'd like
>to get it running again.
>
>The problem I have, dear reader, is that I don't have any tech notes for
>this little black beauty. DEC have been most unhelpful, and the original
>owner kindly threw away the settings booklet that came with the chamber
>many moons ago.
>

I don't know if this will help, but DEC sold its small disk division to
Quantum a couple of years ago. Quantum may be able to get you some
documentation for the drive, if it is not posted on its web site.

Joe Heimann

hei...@ecs.umass.edu
Engineering Computer Services
College of Engineering
University of Massachusetts /Amherst

[Steve Ligett]

In article <1997092319...@ppp15.adl.auslink.net>
bra...@macedge.dotat.com (Geoffrey) writes:

> Any information you could send my way (via news or mail) would be most
> appreciated, as I don't really want to go any further until I find out
> what the other 11 jumper pairs do.

There are variants, but this is common (signals are true when low)

The even numbered pins are logic low (gnd), except for
8 missing,
10 spindle sync,
12 & 18 reserved.

pins odd pins use
1 2
o o ID 0
o o ID 1
o o ID 2
o Fault
o o Busy
o o +5
o o Protect/Delay
o o AC Low (input)
o o reserved
o o spindle sync
19 20