20 Nov
2006
20 Nov
'06
11:25 p.m.
Hi
I have one that i would like to get working but
have not been able to find much real helpfull
info on it.
These are based on a Computer Pheripherals inc.
tape drive. At least that is whats on the sticker.
It turns on and when you push "logic on" it goes
into self test and just stays there with out any
codes displayed. Display just stays at "00"
voltages look close. DEC manual says system main
board or voltages off. I guess they just had a
stack of spare boards to test with.
Thanks, Jerry
Jerry Wright
JLC inc
g-wright at att.net
21 Nov
21 Nov
10:18 a.m.
On Nov 20, 2006, at 11:25 PM, g-wright at att.net wrote:
I have one that i would like to get working but
have not been able to find much real helpfull
info on it.
These are based on a Computer Pheripherals inc.
tape drive. At least that is whats on the sticker.
It turns on and when you push "logic on" it goes
into self test and just stays there with out any
codes displayed. Display just stays at "00"
voltages look close. DEC manual says system main
board or voltages off. I guess they just had a
stack of spare boards to test with.
As far as I recall, the TU80 is a rebadged CDC Keystone air-
bearing drive, model 92181. There are service manuals for that drive
on Bitsavers. Look here:
http://www.bitsavers.org/pdf/cdc/magtape/
-Dave
--
Dave McGuire
Cape Coral, FL
2:44 p.m.
New subject: TU-81+?
Dave wrote....
As far as I recall, the TU80 is a rebadged CDC
Keystone air- bearing
drive, model 92181. There are service manuals for that drive on
Bitsavers. Look here:
http://www.bitsavers.org/pdf/cdc/magtape/
So what about a TU81+? Those aren't quite the same drive I don't think. Is
the same manual sufficient for most things? Or is the TU81+ some other
rebadged drive that would be on bitsavers?
Speaking of which... anyone have a spare of the ribbon cable that goes from
the KLESI-UA card to the cabinet I/O bulkhead?
Jay West
5:30 p.m.
New subject: TU-81+?
"Jay West" <jwest at classiccmp.org> wrote:
Dave wrote....
IIRC the TU-80 is mostly a Keystone II (92181), the TU-81+ is
mostly (but more than) a Keystone III (92185). I think there
were variant model numbers for top-of-rack mounting (like the
versions DEC sold) vs the ones that went on a front of a rack
(often seen in Sun and countless other systems). I never could
tell if the DEC-badged versions had idential firmware (they often
tweaked things) but I never noticed any differences.
DEC TU-80's and TU-81's are usually configured to not run the
blower all the time, while most of the Keystones I used that didn't
come through DEC did run the blower all the time. I think this is
actually menu-configurable from SETUP but maybe it's really a firmware
difference (too many years!).
As far as I recall, the TU80 is a rebadged CDC
Keystone air- bearing
drive, model 92181. There are service manuals for that drive on
Bitsavers. Look here:
http://www.bitsavers.org/pdf/cdc/magtape/
So what about a TU81+? Those aren't quite the same drive I don't think. Is
the same manual sufficient for most things?
Some of the built-in diagnostics are the same. What's wrong with the
bitsavers manuals for the TU81? /pdf/dec/magtape/tu81/*
Tim.
22 Nov
22 Nov
9:38 a.m.
New subject: TU-81+?
Tim Shoppa wrote....
Some of the built-in diagnostics are the same.
What's wrong with the
bitsavers manuals for the TU81? /pdf/dec/magtape/tu81/*
I did a poorly phrased unix "find" command on bitsavers, and missed that the
document was there. ARGH!
Thanks for pointing it out to me!
Jay West
21 Nov
21 Nov
5:42 p.m.
It turns on and when you push "logic on" it
goes
into self test and just stays there with out any
codes displayed. Display just stays at "00"
voltages look close. DEC manual says system main
board or voltages off. I guess they just had a
stack of spare boards to test with.
Again, I've never worked on one of these, so this is very generic
information.
If there's a recognisable microprocessor on the controller board, I'd
check it was getting a clock signal, that the reset line wasn't being
held asserted, and then check that there was activity on the bus lines
from said microprocessor.
This might give you an idea of where to start looking for the fault.
-tony
22 Nov
22 Nov
2 a.m.
Hi Jerry,
I have a couple of these that are currently occupying space. Too big to
ship, but I'm willing to part them out for a reasonable price.
Regards,
Clint
On Tue, 21 Nov 2006, g-wright at att.net wrote:
Hi
I have one that i would like to get working but
have not been able to find much real helpfull
info on it.
These are based on a Computer Pheripherals inc.
tape drive. At least that is whats on the sticker.
It turns on and when you push "logic on" it goes
into self test and just stays there with out any
codes displayed. Display just stays at "00"
voltages look close. DEC manual says system main
board or voltages off. I guess they just had a
stack of spare boards to test with.
Thanks, Jerry
Jerry Wright
JLC inc
g-wright at att.net
6458
days inactive
6459
days old
6 comments
6 participants
participants (6)
-
ard＠p850ug1.demon.co.uk -
cctech＠porky.vax-11.org -
g-wright＠att.net -
jwest＠classiccmp.org -
mcguire＠neurotica.com -
shoppa_classiccmp＠trailing-edge.com