15 Oct
2000
15 Oct
'00
7:27 p.m.
Hello Everyone,
I seem to be in possesion of a "broke" TF86 drive. As far as I can tell the
only thing "wrong" with it is that it seems to have unhooked its
"tongue"
(the take up leader) and I've fixed that. Now I was wondering if there were
any tests I could run on it before I tried putting it into a chassis to see
what it does :-). It has a separate "bridge board" that converts its HD50
connector to DSSI.
Some things I'm trying to ascertain:
1) Can I convert it to a TZ86 using the bridgeboard from a TK85? (they at
least share connector similarity.
2) Is there any way to test it without hooking it to a DSSI bus?
3) Does anyone know the MOLEX part number for the 5 space DSSI
power plug?
--Chuck
16 Oct
16 Oct
12:01 p.m.
Chuck McManis wrote:
I seem to be in possesion of a "broke" TF86
drive. As far as I can tell the
only thing "wrong" with it is that it seems to have unhooked its
"tongue"
(the take up leader) and I've fixed that. Now I was wondering if there were
I'm guessing that the only thing wrong with the drive was the sucked in
leader. This is a *common* problem with DLT drives (well, it is for us
around here, but considering how many we have).
any tests I could run on it before I tried putting it
into a chassis to see
what it does :-). It has a separate "bridge board" that converts its HD50
connector to DSSI.
What happens when you apply power? There really aren't any tests you can
run outside a machine that I'm aware of, plus I'm only familiar with DLT4000
and DLT7000 drive (since you can't really count TK50, TZ30, and TK70
drives).
Some things I'm trying to ascertain:
1) Can I convert it to a TZ86 using the bridgeboard from a TK85? (they at
least share connector similarity.
Maybe. The TK85 bridgeboard should convert a TF85 into a TZ85 (are the SCSI
drives actually called TZ, or TK?). On the DLT4000/7000 drives I believe
it's just the board on the back that defines if they're SCSI-Diff or
SCSI-SE.
2) Is there any way to test it without hooking it to
a DSSI bus?
Just go ahead and hook it up.
Zane
12:28 p.m.
sorry wrong mail box, try again!
John Sauer
AAPD.NET
john(a)aapd.net
http://www.aapd.net
503.356.1693 Toll Free 877.955.6900
-----Original Message-----
From: owner-classiccmp(a)classiccmp.org
[mailto:owner-classiccmp@classiccmp.org]On Behalf Of healyzh(a)aracnet.com
Sent: Monday, October 16, 2000 2:02 PM
To: classiccmp(a)classiccmp.org
Subject: Re: Fixing a TK86
Chuck McManis wrote:
I seem to be in possesion of a "broke" TF86
drive. As far as I can tell
the
only thing "wrong" with it is that it seems
to have unhooked its "tongue"
(the take up leader) and I've fixed that. Now I was wondering if there
were
I'm guessing that the only thing wrong with the drive was the sucked in
leader. This is a *common* problem with DLT drives (well, it is for us
around here, but considering how many we have).
any tests I could run on it before I tried putting it
into a chassis to
see
what it does :-). It has a separate "bridge
board" that converts its HD50
connector to DSSI.
What happens when you apply power? There really aren't any tests you can
run outside a machine that I'm aware of, plus I'm only familiar with DLT4000
and DLT7000 drive (since you can't really count TK50, TZ30, and TK70
drives).
Some things I'm trying to ascertain:
1) Can I convert it to a TZ86 using the bridgeboard from a TK85? (they at
least share connector similarity.
Maybe. The TK85 bridgeboard should convert a TF85 into a TZ85 (are the SCSI
drives actually called TZ, or TK?). On the DLT4000/7000 drives I believe
it's just the board on the back that defines if they're SCSI-Diff or
SCSI-SE.
2) Is there any way to test it without hooking it to
a DSSI bus?
Just go ahead and hook it up.
Zane
12:56 p.m.
New subject: Interesting tidbits Re: Fixing a TK86
At 02:01 PM 10/16/2000 -0700, Zane wrote:
Just go ahead and hook it up.
Which I did and it seems to work fine. After init'ing a tape in it the "use
cleaning tape" light came on but that is easily dealt with. I did a
standalone backup to the tape and booted from it so it seems to work both
for reading and writing.
So here are a couple of interesting tidbits:
1) The TK85 and TK86 tape drive mechanisms share the same
connection (a 50 pin high density honda connector)
2) The "bridge board" (DEC Part #5419089-21) is the same
for both drives. (this board has a DSSI interface on it)
3) I'm guessing that the bridge board for the TZ85 is the
same as the TZ86 so I'm pretty much in high density heavan.
Now to find an inexpensive source of a dozen or so CompacTape III's.
--Chuck
3:09 p.m.
New subject: Interesting tidbits Re: Fixing a TK86
Which I did and it seems to work fine. After
init'ing a tape in it the "use
cleaning tape" light came on but that is easily dealt with. I did a
standalone backup to the tape and booted from it so it seems to work both
for reading and writing.
Cool!
So here are a couple of interesting tidbits:
1) The TK85 and TK86 tape drive mechanisms share the same
connection (a 50 pin high density honda connector)
2) The "bridge board" (DEC Part #5419089-21) is the same
for both drives. (this board has a DSSI interface on it)
3) I'm guessing that the bridge board for the TZ85 is the
same as the TZ86 so I'm pretty much in high density heavan.
I'd say try it, but this makes me really paranoid. I don't think I'd try it
without confirmation it will work. I think I'll recommend something I've
recommended to you before. Ask about this on comp.os.vms and comp.sys.dec!
Now to find an inexpensive source of a dozen or so
CompacTape III's.
--Chuck
Well, two of the top places I'd check would be Fry's and
http://www.pcmall.com I'd probably also check http://www.necx.com
Zane
8681
days inactive
8682
days old
4 comments
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