>from hp-85 service manual 00085-90154 (5/83) (I think this is the same for
Hp-85 and 85B)
Belt, paper advance p/n 1500-0572
Belt, print head p/n 1500-0529
HP still sold these through thier HP Direct phone order system a couple of
years ago (800-227-8164)
Small belts are available -- there's a company in NJ (Winifred M. Berg)
that specializes in small stuff. I can dig up the address for you if you
want.
manney(a)nwohio.com
----------
> From: classiccmp(a)u.washington.edu
> To: Manney
> Subject: HP-85B Printer Repairs.
> Date: Monday, December 22, 1997 4:25 AM
>
> I would be grateful if someone on this list could help me.
>
> I have a somewhat old-fashioned colleague who still uses an HP-85B.
> This morning he came and asked me why the paper advance on the built in
> printer wasn't working, what was he doing wrong?
>
> He had borrowed an old HP-85 from another section (who had thrown it
> out, apparently - it had a red sticker saying "Equipment not to be
> used"), but this also wouldn't advance the paper, so he had concluded he
> must be getting something wrong.
>
> I tried a couple of times to no avail, so I took the lid off. (Why do
> they have to make the tape eject button so huge?). Not much poking
> around to discover that the toothed belt that drives the paper advance
> had perished and snapped. The rubber was mostly in dust all over the
> place; the strengthening threads were wrapped around the drive gear on
> the motor. The smaller toothed belt that drove the print head was also
> very ropy.
>
> So, we opened up the other 85. The same fault, with the remaining belt
> in worse condition.
>
> To conclude, then, does anyone know where to get replacement belts, or
> what the HP part numbers are, or any other useful information?
>
> Philip.
>
> <><><><><><><><><><><><><><> Philip Belben <><><><><><><><><><><><><><>
>
> Das Feuer brennt, das Feuer nennt die Luft sein Schwesterelement -
> und frisst sie doch (samt dem Ozon)! Das ist die Liebe, lieber Sohn.
>
> Poem by Christian Morgenstern - Message by Philip.Belben(a)powertech.co.uk
>
Hello, all:
I just wanted to take a moment {not ask a question, but} to wish
everyone on the list a Merry Christmas, Happy Chanukah, or a fairly
non-sectarian, politically-correct Happy Holidays.
I also wanted to take the time to say thanks to everyone who has helped
me this year to get my classic collecting off the ground. I've learned a lot
about many aspects of the early era of computers; an era that began too
early for me to think about (I was 8 when my PDP-11 was manufactured!) I've
also come to appreciate their "simple elegance." Anyway, thanks go to all,
especially to Sam, Tim, Paul, Allison, and Uncle Roger.
Rich Cini/WUGNET
<nospam_rcini(a)msn.com> (remove nospam_ to use)
ClubWin! Charter Member (6)
MCP Windows 95/Windows Networking
============================================
Back when I was getting older issues of Computer Shopper, I read about
the Adam in a regular column, seems the users group support was pretty
strong for the bugger, they had several conventions over the years (I
noticed their web page not too long ago.)
The Adam did have some expansion beyond the second datadrive you could
get a disk drive controller to hook in an external drive.
I recall a warning about the datadrives or the Adam in general: don't
turn on the Adam with a datatape in the drive, the drive will send out a
pulse that may damage data stored on the part of the tape next to the
write head (some said up to a few feet away, I don't know about
that...:/ )
The datadrives can use cassette tapes but they need to have slight
(housing) modifications done and be pre-formatted (a tape duplicator may
do the job, though I bet there are formatting utilities on the Internet.
All I have for the Adam now is some xerox catalog of PD software, it
was cheap and I like to know what programs were on the other machines,
to see if there any gaps to be filled for my collection. :)
Larry Anderson
--
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Visit our web page at: http://www.goldrush.com/~foxnhare/
Call our BBS (Silicon Realms BBS 300-2400 baud) at: (209) 754-1363
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I guess that's the loss of plasticizer ...the same thing you see in
stiffening and embrittlement of vinyl.
I've never see thermosets go bad, unless attacked by solvents (altho' I've
seen epoxies go gummy.)
----------
> From: classiccmp(a)u.washington.edu
> To: Manney
> Subject: Re: Plastic rot
> Date: Monday, December 22, 1997 11:19 AM
>
> At 09:22 12/22/97, you wrote:
> >I have several old HP computers that have done the same thing. Is there
> >any way to repair or restore the color?
>
> No, there (currently) isn't. And the real bother isn't the
discoloration,
> but the accompanying embrittlement -- I picked up a mustard-colored HP
> terminal once and had a piece of the case break off in my hand.
>
> A bloke who was researching this at the Science Mus. in London wrote an
> article for the ANALYTICAL ENGINE in which he basically said that there
was
> no reversing the effect, and the only way you could limit the
deterioration
> was to keep the artifact in near-total darkness. I also asked the
> Smithsonian and they concurred with this.
>
> __________________________________________
> Kip Crosby engine(a)chac.org
> http://www.chac.org/index.html
> Computer History Association of California
>
>
In a message dated 97-12-22 02:25:29 EST, you write:
> What about JTS (with their 500,000MTBF), the company that owns what's left
> of Atari? (Their drives are on the top of MY list for quality.)
> Tim D. Hotze
i bought two of those JTS 1G drives, and seem to be no worse or no better than
any other drive out there. also has 3 year warranty.
david
I saw this interesting, computer look-a-like box at a local thrift the other
day, and decided to spring for the $2 and buy the thing. I have no idea
what it is; hopefully someone in this group will recognize the description.
First off the unit measures approximately 15" x 11" and is 4.5" high and is
colored the typical office equipment beige. The front of the box is a
darker brown with the name "ISAAC" written on the left hand side. Above the
two A's in ISAAC is a graphic symbol of an apple. On the upper right hand
side are the words "Cyborg model 91A". Across the bottom, left to right is
a power, push button switch next to an light indicator; four small turnable
knobs with indicator lights, marked 0, 1, 2, 3, respectively. Above the 0
knob is printed the word "Schmitt"; above the 1 & 2 knobs, "Reference";
above the 3 knob, "Adjust". On the right hand side are five push button
switches labled "READ OFF"; Schmitt 0, 1; Reference 2, 3.
Attached at the back by way of two flat connectors is a "91A Isaac
Distribution Board". It has two rows of screw type connectors for attaching
wire leads. They are marked off in banks with names such as "Binary In",
"Binary Out", "A/D Inputs", "SCH In", and others. Nearly 100 separate
connections possible. Across the bottom in small print is "Cyborg
Corporation, 342 Western Ave., Boston, MA, U.S.A. 02135.
Opening the box one finds a main system board with the words "91A ISSAC Main
Board D91A - 8131 REV D 281-061" stenciled near the center. There are banks
of what appear to be memory chips, as well as other various unidentifiable
(to me at least) chips, several banks of dip switches, and a bank of eight
slots, analogous to eight bit expansion slots, though somewhat smaller,
about three inches long. There is nothing which resembles a CPU, nor is
there any obvious way to connect power.
I've done some internet searches using keywords such as Isaac, cyborg, etc.
and have come up empty. Does anyone have any idea of what I bought with my
two bucks?
Cliff Gregory
cgregory(a)lrbcg.com
What about JTS (with their 500,000MTBF), the company that owns what's left
of Atari? (Their drives are on the top of MY list for quality.)
Tim D. Hotze
-----Original Message-----
From: jpero(a)cgo.wave.ca <jpero(a)cgo.wave.ca>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Monday, December 22, 1997 7:59 AM
Subject: Re: Micropolis - moon or bust?
> At 11:33 PM 12/20/97 +0000, you wrote:
> >Hi!
> >
> >Have anyone noticed that Micropolis hung up their website and fallen
> >off earth's face?
>
> Sorry to say, there was an announcement about a month ago that the parent
> company of Micropolis, faced with continuing losses in the disk storage
> division decided to terminate all operations.
>
> Or, in a more direct form: Micropolis got it's plug pulled.
>
> Yet another of the older companies falls by the wayside.
>
> -jim
Thank you for this tidbit news! :) That is important because I get
several questions or read others or helping out other guys with
hd's...
Who was the company who owned and (also pulled the plug) on this
Micropolis?
In other words, we have nothing to compare anything to this quality
standards that was once Micropolis. Now, that is very unfortune
news. Fujitsu is no longer on my favorite list. The definatine
quality control of any remains with Quantum and Seagate's top end
drives. HMO
Thanks...Until anything changes, I will tell anyone who asks about
buying hd to either pick Quantum for anything or Seagate (for medium
to top end, low end are "Conner" design and QC and importantly
compatiablity on master/slave relationship on these are still so so
and bit slow). Their former low end before "Conners" replaced 'em
were superb after years of debugging and had seagateshield which I
consider this neat and good idea for short time! The design mark on
these low end drives were left by long gone CDC and Imp---? and still
see former designs in Cateeh and some few high end drives.
If there is once in a while best deal on new remaining micropolis hds
and expect no warrenty on them if the price is right. If I suspect
rightly...
WD is just ok, still too new to hd making since they're quit their
card controller making exactly under 10 years ago. Superb but
improvements would be good to speed up the ragged performances, oh
well no more controllers from them now. :( ) Especially on newer
series currently in production for least 2 years and still have
problems with 3 platters drives usually.
I hasten to add my tidbit about wdc, few years ago when I was
using WD's drives (never brought any except for used buys) in service
work and helping out friends. Noticed they can be commanded to seek
harder when PIO modes is pushed over (set by on hard jumpered i/o VL
cards) faster than their specs which made weird unhealthy noises and
causes errors. Quickly put correct setting in order afterwards.
Real fun to see WD 420mb hd read from out to in in seconds flat!
That horrible noise and nearly metallic noise, ugh! Other than
that, I have never seen like that in other hard drives of any makes
besides WD.
Maxtor, JTS and Samsung is what I prefer to avoid.
Side comment: I wonder why several companies pulled out making 2.5"
drives (Like to have more options myself.) and one or two jumping in
making oddball 3.0" hard drives for portables recently?
And finally, years ago, I was told by my best friend in computer
service former Conners had problems with 2.5" drives, could anyone
have a care to tell me more about this?
Jason D.
> ---
> jimw(a)agora.rdrop.com
> The Computer Garage - http://www.rdrop.com/~jimw
> Computer Garage Fax - (503) 646-0174
My VAX is working! And it talks TCP/IP!
DNS is out, but I can send mail (by telnetting to port 25 of the mailserver)
Once my new boss shows up with root's password, I'll make DNS work. Then
I can be found at minako.umtec.com.
> Manney, what's up with your motherboard listing...I need bit more
> info are they usually generics and chipset types usually; VLSI, UMC
> etc is more than enough.
Oh yeah...the motherboards. I keep forgetting to post the list. Probably
after Christmas. Sorry -- been swamped.
