HP 300-series boot rom archive?

Josh Dersch derschjo at gmail.com
Mon Jul 17 22:42:10 CDT 2017


On Mon, Jul 17, 2017 at 8:13 PM, Curator <curator at hpmuseum.net> wrote:

> I have to agree with Lee's view on the HP300...  THIS is an HP300...
> http://www.hpmuseum.net/display_item.php?hw=116


Yep yep, I replied to Lee (thought I'd replied to the list, apparently I
don't know how that works anymore) and apologized for not being specific
enough :).


>
>
> Now for the HP9000/375 - I've not seen a service manual for the 375 but
> here's a link to the Service Handbook.
>
> http://www.hpmuseum.net/document.php?hwfile=2053
>
> There's a list of hardware related documents in that handbook but there's
> no mention of a Service Manual.  Perhaps it was an unlisted HP internal
> document - but the handbook looks like it has enough for the typical field
> repair efforts of its era..
>

Yep, I found that one, but it's not useful for actually repairing anything
beyond basic board-swapping.


>
> If yours is dead, a bad power supply is the most likely issue.  The same
> power supply was used in the 9000/340 but the 340's service manual doesn’t
> tell you much about the internals of the supply.  The 345 service manual
> tells you more but the supply for that box is a different model.
>

It's not the supply, I've tested the supply, and I've tested the board in
known-working chassis and it behaves identically (all diagnostic LEDs on, a
buzz coming from the speaker, similar to the short one you normally hear at
power-up, but forever.)  It seems like it's probably not coming out of
reset but that's just a guess.

Thanks!
Josh



>
> The supply was most likely sourced from a third party so you might have to
> hunt around for an OEM part number on the unit and maybe get lucky with
> schematics on the web.  Otherwise standard troubleshooting tasks for switch
> mode power supplies would apply..  http://www.repairfaq.org/sam/
> smpsfaq.htm#smpssctos
>
> David Collins
> HP Computer Museum
>
> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Lee
> Courtney via cctalk
> Sent: Monday, 17 July 2017 4:36 PM
> To: Josh Dersch <derschjo at gmail.com>; General Discussion: On-Topic and
> Off-Topic Posts <cctalk at classiccmp.org>
> Subject: Re: HP 300-series boot rom archive?
>
> Hi Josh,
>
> "lot of HP 300 gear"
>
> Being picky here, but I worked at HP in the HP 300 days and the system you
> acquired does not sound like an HP 300, aka Amigo (
> https://en.wikipedia.org/wiki/HP_300), but rather a model of HP 9000
> desktop machines (M68K based?).
>
> Lee C.
>
> On Sun, Jul 16, 2017 at 7:50 PM, Josh Dersch via cctalk <
> cctalk at classiccmp.org> wrote:
>
> > Hi all --
> >
> > I picked up a small lot of HP 300 gear yesterday and I'm working on
> > getting them going.  In particular, I have a 9000/350 that I'd like to
> > use but it has what appears to be a very early boot ROM (dated 7/9/87,
> > version
> > A2) and it doesn't recognize the 98658 SCSI controller I'd like to use
> > in it -- it enumerates as "127 at 14" rather than getting a the usual
> > identification.  I'm hoping that later revisions might support this card.
> > (I lack functioning HP-IB storage at the moment).  Is there an archive
> > of ROM images for the 300 series anywhere?  Anyone have a 350 with a
> > later boot ROM they can image for me?
> >
> > (Also, if anyone has a real service manual for the 9000/375, drop me a
> > line -- I have one that's stone dead...)
> >
> > Thanks as always,
> >
> > Josh
> >
> >
>
>
> --
> Lee Courtney
> +1-650-704-3934 cell
>
>


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