5 Sep
2004
5 Sep
'04
3:33 p.m.
On Sep 5 2004, 22:37, Wai-Sun Chia wrote:
Check these out then:
BA11-M (11/03) DEC/PDP logo in glorious DEC maroon:
http://hampage.hu/pdp-11/kepek/pdp1103.jpg
That doesn't look original to me.
BA11-S (11/23) DEC/PDP logo in a either a darkgrey or
VT100 brown
background and DEC bricks and PDP font in white:
http://www.shiresoft.com/pdp-11/11-23/11-23-front-panel.jpg
That's simply the result of a colour cast in a badly lit/badly exposed
photo, probably taken under tungsten lighting. It looks just like mine
except for the cast; mine is plain DEC grey with a black and white
sticker.
BA11-S (11/23PLUS) same as above:
http://hampage.hu/pdp-11/kepek/1123PLUS.JPG
Where's the colour in that? It's a standard 11T23 system, identical to
the one in the next room to me -- and I can assure you that the only
colour is the yellow and red on the RL02 lamps.
I love the one in DEC maroon background! :-)
I think someone has adulterated it. I'm sure that's not original.
--
Pete Peter Turnbull
Network Manager
University of York
7 Sep
7 Sep
2:08 p.m.
New subject: HP Repair parts needed (urgently...)
I urgently need a part to repair an HP tape drive.
What I'm looking for is the hub release mechanisim from a HP 7970 A, B,
C, or E drive. This same
part may also be used on other HP tape drives as well. The same
mechanisim is used for both the
supply and take-up reels.
If you have a parts machine HP tape drive, please contact me ASAP.
To remove this part from a drive, lift the tape reel unlocking tab on
the front of the hub.
You will see a small phillips head screw, remove this screw (it does not
need to be fully
unscrewed, but you might as well...).
With the locking screw removed, unscrew (counter-clockwise) the release
mechanisim from the
hub while preventing the hub from turning (simple finger pressure should
do).
How I broke my release mechanisim....
I had a reel of tape with a rather sticky write-enable ring mounted, and
it stuck to the hub. Even
with the release tab lifted I was unable to get this reel of tape off
the hub. I managed to free the
offending reel of tape, but in the process the release tab got whacked,
and the cams under the
tab cracked and split.
The major pain of this is, I need to cut a bootable tape, and now I
cannot even mount a reel.
3:55 p.m.
New subject: HP Repair parts needed (urgently...)
Joe R. said that he had some in response to a query I posted some time ago.
He never found them I guess. I'm still looking for a couple, exact same part
as you are. Then again, I'm sure he's got his hands full these days. If you
find a source for these Bob, please let me know!
Jay
8 Sep
8 Sep
7:32 a.m.
New subject: HP Repair parts needed (urgently...)
A local place scrapped a bunch of 7970s about a year ago. I rescued 6 or
7 intact ones. I went back later hoping to find some hubs for Jay but they
were all gone so all I have are the complete drives. I don't remember the
exact model but Jay probably remembers, they were the model that he was
looking for last year.
Joe
At 07:55 PM 9/7/04 -0500, you wrote:
Joe R. said that he had some in response to a query I
posted some time ago.
He never found them I guess. I'm still looking for a couple, exact same part
as you are. Then again, I'm sure he's got his hands full these days. If you
find a source for these Bob, please let me know!
Jay
7 Sep
7 Sep
4:49 p.m.
New subject: HP Repair parts needed (urgently...)
Bob Shannon wrote:
How I broke my release mechanisim....
I had a reel of tape with a rather sticky write-enable ring mounted,
and it stuck to the hub. Even with the release tab lifted I was
unable to get this reel of tape off the hub. I managed to free the
offending reel of tape, but in the process the release tab got
whacked, and the cams under the tab cracked and split.
Back in the 1980s when we had 7970Es hooked up to 3000s and in
production, the release tabs used to crack once in a while too. I had
one break off in my hand. I wasn't pulling on it any harder than
usual, it just gave. The stress of repeated use weakens the plastic.
Of course, back then, we had two 7970Es on that 3000, and a phone call
led to an HP CE arriving to replace the broken part.
-Frank McConnell
5:05 p.m.
New subject: HP Repair parts needed (urgently...)
Of course, back then, we had two 7970Es on that 3000,
and a phone call
led to an HP CE arriving to replace the broken part.
Oh Hell! (slaps palm of hand on forehead)
THAT'S what I should have been doing, getting a maintenance contract. Ok,
I'm off to call HP's customer care line, and get set up on a maintenance
contract for two 2100's, 2748, 7900, 7970, etc. Cool! Sure will save me a
bundle in buying old parts on ebay! *GRIN*
Jay West
8 Sep
8 Sep
6:54 a.m.
New subject: HP Repair parts needed (urgently...)
Jay West wrote:
THAT'S what I should have been doing, getting a
maintenance contract. Ok,
I'm off to call HP's customer care line, and get set up on a maintenance
contract for two 2100's, 2748, 7900, 7970, etc. Cool! Sure will save me a
bundle in buying old parts on ebay! *GRIN*
Of course, what I was really trying to point out was, Bob's problem
is classic computing as it really was 20 years ago when you could
actually get a maintenance contract.
There's three things I can think of that go wrong with 7970s:
(1) the hub release tabs break
(2) the heads wear
(3) the lamps burn out
We had 7970Es in several-times-daily use, for reading and writing data
transfer tapes and for backups. For each drive in that sort of use,
about every 18 months we'd start having excessive trouble reading
and/or writing tapes, and this would turn out to be due to having worn
the heads down. First time the CEs would be able to readjust the
drive electronics to work with the somewhat worn head, the second time
they would have to replace the head. Lather, rinse, repeat until 1600
BPI nine-track is no longer the preferred medium.
And the lamps burn out. HP eventually did a field upgrade that
replaced the lamp panel with an LED panel. Apparently this was
cost-effective for HP in that it meant not having to spend CE time on
replacing burned-out lamps. But I note some 7970s escaped the upgrade
and still have lamp panels.
-Frank McConnell
7:28 a.m.
New subject: HP Repair parts needed (urgently...)
Bob,
I have some 7970 drives but no spare parts. I can loan you a hub but
you'll need to replace it sooner or later (or just make a deal for the
entire drive(s)).
Joe
At 07:08 PM 9/7/04 -0400, you wrote:
I urgently need a part to repair an HP tape drive.
What I'm looking for is the hub release mechanisim from a HP 7970 A, B,
C, or E drive. This same
part may also be used on other HP tape drives as well. The same
mechanisim is used for both the
supply and take-up reels.
If you have a parts machine HP tape drive, please contact me ASAP.
To remove this part from a drive, lift the tape reel unlocking tab on
the front of the hub.
You will see a small phillips head screw, remove this screw (it does not
need to be fully
unscrewed, but you might as well...).
With the locking screw removed, unscrew (counter-clockwise) the release
mechanisim from the
hub while preventing the hub from turning (simple finger pressure should
do).
How I broke my release mechanisim....
I had a reel of tape with a rather sticky write-enable ring mounted, and
it stuck to the hub. Even
with the release tab lifted I was unable to get this reel of tape off
the hub. I managed to free the
offending reel of tape, but in the process the release tab got whacked,
and the cams under the
tab cracked and split.
The major pain of this is, I need to cut a bootable tape, and now I
cannot even mount a reel.
13 Sep
13 Sep
4:01 p.m.
New subject: HP Repair parts needed (urgently...)
Joe,
I'd thought you were holding a complete 7970E for me already?
What happened to that drive?
Joe R. wrote:
Bob,
I have some 7970 drives but no spare parts. I can loan you a hub but
you'll need to replace it sooner or later (or just make a deal for the
entire drive(s)).
Joe
At 07:08 PM 9/7/04 -0400, you wrote:
I urgently need a part to repair an HP tape
drive.
What I'm looking for is the hub release mechanisim from a HP 7970 A, B,
C, or E drive. This same
part may also be used on other HP tape drives as well. The same
mechanisim is used for both the
supply and take-up reels.
If you have a parts machine HP tape drive, please contact me ASAP.
To remove this part from a drive, lift the tape reel unlocking tab on
the front of the hub.
You will see a small phillips head screw, remove this screw (it does not
need to be fully
unscrewed, but you might as well...).
With the locking screw removed, unscrew (counter-clockwise) the release
mechanisim from the
hub while preventing the hub from turning (simple finger pressure should
do).
How I broke my release mechanisim....
I had a reel of tape with a rather sticky write-enable ring mounted, and
it stuck to the hub. Even
with the release tab lifted I was unable to get this reel of tape off
the hub. I managed to free the
offending reel of tape, but in the process the release tab got whacked,
and the cams under the
tab cracked and split.
The major pain of this is, I need to cut a bootable tape, and now I
cannot even mount a reel.
16 Sep
16 Sep
3:03 p.m.
New subject: HP Repair parts needed (urgently...)
Bob,
I have six or seven of them here. Come and get one (or more!).
Joe
At 09:01 PM 9/13/04 -0400, you wrote:
Joe,
I'd thought you were holding a complete 7970E for me already?
What happened to that drive?
Joe R. wrote:
Bob,
I have some 7970 drives but no spare parts. I can loan you a hub but
you'll need to replace it sooner or later (or just make a deal for the
entire drive(s)).
Joe
At 07:08 PM 9/7/04 -0400, you wrote:
I urgently need a part to repair an HP tape
drive.
What I'm looking for is the hub release mechanisim from a HP 7970 A, B,
C, or E drive. This same
part may also be used on other HP tape drives as well. The same
mechanisim is used for both the
supply and take-up reels.
If you have a parts machine HP tape drive, please contact me ASAP.
To remove this part from a drive, lift the tape reel unlocking tab on
the front of the hub.
You will see a small phillips head screw, remove this screw (it does not
need to be fully
unscrewed, but you might as well...).
With the locking screw removed, unscrew (counter-clockwise) the release
mechanisim from the
hub while preventing the hub from turning (simple finger pressure should
do).
How I broke my release mechanisim....
I had a reel of tape with a rather sticky write-enable ring mounted, and
it stuck to the hub. Even
with the release tab lifted I was unable to get this reel of tape off
the hub. I managed to free the
offending reel of tape, but in the process the release tab got whacked,
and the cams under the
tab cracked and split.
The major pain of this is, I need to cut a bootable tape, and now I
cannot even mount a reel.
4 p.m.
New subject: HP Repair parts needed (urgently...)
Joe (and others...)
I've just moved to a new PC, and don't have access to my contact
info and old email on my old PC (It's under quarantine!).
So if anyone is working a deal or needing support, please send me an
off-list email.
7244
days inactive
7255
days old
11 comments
5 participants
participants (5)
-
bshannon＠tiac.net -
fmc＠reanimators.org -
jwest＠classiccmp.org -
pete＠dunnington.u-net.com -
rigdonj＠cfl.rr.com