KS10 power-up
Mike Ross
http://www.youtube.com/watch?v=SVAHSzz9-Zg
The ?NXM problem at the end of the video was quickly solved; EM, DM, and ZM are
all now working nicely. The one command that doesn't work, yet, is BT... I have
a bunch of system packs on RP06, but no RP06 drive to boot them off. I now have
a beautiful RM03, looks virtually like new, but no bootable RM03 packs... would
some kind person *please* help square this circle? Ultimately I'd like to get an
RP06, but in the meantime someone *must* have a spare bootable KS RM03 system
pack squirreled away somewhere? Pretty please?
I could start getting into a magtape boot, since I have TOPS-20 disto tapes, but
the TU45 is ratty and needs work, and in any case is a UK 50Hz device - that
will pose a problem on 60Hz? I know some (most? all?) old disks don't like
different frequencies - RK05s in particular came with either 50Hz or 60Hz
pulleys, to get the rotational speed right, but what about tapes and other
devices?
Thanks!
Mike
--
http://www.corestore.org
'As I walk along these shores
I am the history within'
Peter Flass
Congratulations! Others will probably tell you, don't use the old
tapes. They should probably be read only once to copy them, then use
one of the copies to play with.
Mike Ross
>Mike Ross wrote:
>> Well after 15 years, the KS10 powered up today quite nicely:
>>
>> http://www.youtube.com/watch?v=SVAHSzz9-Zg
>> I could start getting into a magtape boot, since I have TOPS-20 disto tapes, but
>> the TU45 is ratty and needs work, and in any case is a UK 50Hz device - that
>> will pose a problem on 60Hz? I know some (most? all?) old disks don't like
>> different frequencies - RK05s in particular came with either 50Hz or 60Hz
>> pulleys, to get the rotational speed right, but what about tapes and other
>> devices?
>Congratulations! Others will probably tell you, don't use the old
>tapes. They should probably be read only once to copy them, then use
>one of the copies to play with.
Thanks. I could always download distro tape images from bitsavers, and write
them to 9-track with a SCSI-attached 9-track, and forget all about my own old
tapes. But my preferred option is still to find a system pack on RM03 and just
boot the damn thing.
Just for entertainment, I powered up one of my two TU45s - the master, with the
TM03 in it. 50Hz drive on 60Hz power... hmmmm, ok it's an experiment. It powered
up ok, but when I tried to load a tape, the reels turned slowly for a few
seconds as they're supposed to, but then the vacuum kicked-in - and sucked about
three feet of tape into the supply column... tried it a couple more times, with
the same result - tape train wreck. Thinking either bad vacuum switch (common
enough problem with old tape drives), or problems with the servo (not) driving
the takeup spool.
Anybody got a spare 60Hz TU45? Or even just the Pertec T9640 mechanism?
BobB
troubleshoot the hubs servos and vacuum switches
It easy to troubleshoot the hubs servos and
vacuum switches on a TU10/16, TU45, etc with
about a 4' loop of tape.
Somewhat hard to describe on how to thread and
load, but once done correctly it becomes an
excellent low cost tape load tester. Invaluable.
Used it in F/S all the time and you can quickly
tell what vacuum switch/sensor or what reel or drive
circuit is bad.
Takes minutes to build and use, if you need it
I can post the “how to”.
>
> Anybody got a spare 60Hz TU45? Or even just the Pertec T9640 mechanism?
>
> Mike
Mike Ross
Sounds pretty neat, and I'd like to have it on general principles. Thanks! I've
checked out a few bits and pieces, but the first TU45 is still a train wreck;
film at 11.
I decided to drag out the other TU45, and it loaded first time no trouble. It's
a slave unit, so there's a small matter of cabling to deal with.
Mike
--
Mike Ross
>Sounds pretty neat, and I'd like to have it on general principles. Thanks! I've
>checked out a few bits and pieces, but the first TU45 is still a train wreck;
>film at 11.
Promised film at 11: http://www.youtube.com/watch?v=i-MOkZ2d1Ls
jmfbahciv
> Well after 15 years, the KS10 powered up today quite nicely:
>
> http://www.youtube.com/watch?v=SVAHSzz9-Zg
Fandamntastic!
/BAH
jmfbahciv
normally. ;-)
/BAH
Mike Ross
>Mike Ross wrote:
>> Just for entertainment, I powered up one of my two TU45s - the master, with the
>> TM03 in it. 50Hz drive on 60Hz power... hmmmm, ok it's an experiment. It powered
>> up ok, but when I tried to load a tape, the reels turned slowly for a few
>> seconds as they're supposed to, but then the vacuum kicked-in - and sucked about
>> three feet of tape into the supply column... tried it a couple more times, with
>> the same result - tape train wreck. Thinking either bad vacuum switch (common
>> enough problem with old tape drives), or problems with the servo (not) driving
>> the takeup spool.
>>
>> Anybody got a spare 60Hz TU45? Or even just the Pertec T9640 mechanism?
>>
>Based on my experiences with our in-house system, your TU45 "worked"
>normally. ;-)
Apparently I'm supposed to ask for the services of a Mr. Jablonsky...
Anyway, my other drive appears to load pretty well:
http://www.youtube.com/watch?v=XJlqLyvAzNc
jmfbahciv
> On Tue, 21 Jul 2009 06:32:05 -0400, jmfbahciv <jmfbahciv@aol> wrote:
>
>> Mike Ross wrote:
>
>>> Just for entertainment, I powered up one of my two TU45s - the master, with the
>>> TM03 in it. 50Hz drive on 60Hz power... hmmmm, ok it's an experiment. It powered
>>> up ok, but when I tried to load a tape, the reels turned slowly for a few
>>> seconds as they're supposed to, but then the vacuum kicked-in - and sucked about
>>> three feet of tape into the supply column... tried it a couple more times, with
>>> the same result - tape train wreck. Thinking either bad vacuum switch (common
>>> enough problem with old tape drives), or problems with the servo (not) driving
>>> the takeup spool.
>>>
>>> Anybody got a spare 60Hz TU45? Or even just the Pertec T9640 mechanism?
>>>
>> Based on my experiences with our in-house system, your TU45 "worked"
>> normally. ;-)
>
> Apparently I'm supposed to ask for the services of a Mr. Jablonsky...
Yep :-). Steve was the only one who get those bloody things to load.
Most operators just shut down the KS, moved the system pack to the
KL or KI and then did the system backups.
>
> Anyway, my other drive appears to load pretty well:
>
> http://www.youtube.com/watch?v=XJlqLyvAzNc
Very good. You are one of the few who can make those tapes
obey.
/BAH
m_thompson
> enough problem with old tape drives), or problems with the servo (not) driving
> the takeup spool.
Both of my TU45s had bad vacuum switches. The rubber diaphrams were
ripped so the switches didn't activate.
You could drill out the rivets, make new diaphrams, and rivet them
back together.
I was able to get new replacements from World Magnetics for about $10
each.
For vacuum switches see: http://designflexswitches.com/
jmfbahciv
Do they work now?
/BAH