21 Mar
2013
21 Mar
'13
1:31 a.m.
I just picked up an RK05AA drive, unknown condition but it appears in good shape
internally. As I was going through a detailed inspection, I touched the foam that
surrounds the air duct that connects to the access door on the cartridge, delivering clean
air. The foam flaked off and seems to be deteriorating. Not as badly as the foam used in
Selectric typewriters, which has turned to sludge after a few decades, but not something I
want releasing particles into an air stream that will flow under the heads.
Is this a known issue with the drives? What do people who restore/repair these do to
eliminate this source of contamination into the cartridge? I would like to address this
before I install a new absolute filter.
Any tips for a substitute for the CE pack when I get to the point of loading heads and
adjusting the drive?
Carl
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21 Mar
21 Mar
5:23 a.m.
I just picked up an RK05AA drive, unknown condition
but it appears in good
shape internally. As I was going through a detailed inspection, I touched
the foam that surrounds the air duct that connects to the access door on
the cartridge, delivering clean air. The foam flaked off and seems to be
deteriorating. Not as badly as the foam used in Selectric typewriters,
which has turned to sludge after a few decades, but not something I want
releasing particles into an air stream that will flow under the heads.
Is this a known issue with the drives? What do people who restore/repair
these do to eliminate this source of contamination into the cartridge? I
would like to address this before I install a new absolute filter.
Any tips for a substitute for the CE pack when I get to the point of
loading heads and adjusting the drive?
Carl
________________________________
This e-mail message, including any attachments, is for the sole use of the
person to whom it has been sent, and may contain information that is
confidential or legally protected. If you are not the intended recipient
or have received this message in error, you are not authorized to copy,
distribute, or otherwise use this message or its attachments. Please
notify the sender immediately by return e-mail and permanently delete this
message and any attachments. Gartner makes no warranty that this e-mail is
error or virus free.
In those case I do clean the old foam and adhesive and use new foam
strips, like the ones you can buy to close drafty windows.
Ed
--
Dit is een HTML vrije email / This is an HTML free email.
Zeg NEE tegen de 'slimme' meter.
7:37 a.m.
Some tips...
Am 21.03.2013 06:31, schrieb Claunch,Carl:
As I was going through a detailed inspection, I
touched the
foam
Not good to touch.
Is this a known issue with the drives?
YES!
The first hello to a RK05 is to remove that foam.
What do people who restore/repair
these do to eliminate this source of contamination into the cartridge? I
would like to address this before I install a new absolute filter.
My solution is:
- Use a vacuum cleaner and a screwdriver. Gently remove most of the foam.
- Use hot air (hairdryer or s.th. alike) to warm up the adhesive strips that are
still in place.
- Remove the adhesive strips and clean. Use the vacuum cleaner while pulling off
the adhesive so nothing will fall down to the filter.
Now you could place something new there. I never did. And I never replaced an
absolute filter. You can do it, of course. I sometimes even don't remove the
adhesive strips.
The only important is that you get rid of *ALL* foam residues.
If you run the drive with foam particles going into the cartridge, you have a
good chance that the drive crashes with awful sounds and you'll have much work
cleaning the cartridge and heads.
Crashing an RK05 is not that kind of disaster as the manual and some people
might tell. But it's better to avoid it.
Then:
1. Clean disk and heads using IPA. NO WATER! Loading heads onto a piece of IPA
wetted tissue and then pulling it gently from side to side works fine. The heads
must be clean. Use wood (e.g. a match) to remove all stains.
1. Spin up the drive, let the heads load.
2. Deacitivate positioner driver with red switch
3. Move the heads manually until there is no sound. If the drive crashes badly,
go back to 1.
4. After having the pack being silent, clean the heads again.
This is *my* procedure to remove foam, clean packs, and heads. And it works fine
for me.
If you destroy a 16 sector pack, do NOT throw it away. Use a spare disk from a
12 sector pack or something else to replace the disk. The most valueable part of
a 16 sector pack is the center. Applies to other non 12 track cartridges as well.
Any tips for a substitute for the CE pack when I get to the point of loading
heads and adjusting the drive?
I've been told that you could align the heads to
data. But you'd need a pack
which has been written on a perfectly aligned drive.
Alignment should be necessary only when you removed the heads AND you want pack
interchangeability between drives. If you have not touched the head screws,
you'll most probably don't need to care about alignment.
Just run your drive! Keep an eyer on the blower motor which tends to slowly die
with fire coming out from time to time (in 220V countries at least). Start to
think about positioner lamp replacement - the lamp will burn someday. Keep an
eye on the 5V regulator. I did not see RK05 capacitor problems yet. But I have
seen breaking 5V regulators.
Kind regards
Philipp
--
Dipl.-Inf. (FH) Philipp Hachtmann
Buchdruck, Bleisatz, Spezialit?ten
Alemannstr. 21, D-30165 Hannover
Tel. 0511/3522222, Mobil 0171/2632239
Fax. 0511/3500439
hachti at hachti.de
www.tiegeldruck.de
UStdID DE 202668329
5:43 p.m.
I just picked up an RK05AA drive, unknown condition but it appears in good =
shape internally. As I was going through a detailed inspection, I touched t=
he foam that surrounds the air duct that connects to the access door on the=
cartridge, delivering clean air. The foam flaked off and seems to be deter=
iorating. Not as badly as the foam used in Selectric typewriters, which has=
turned to sludge after a few decades, but not something I want releasing p=
articles into an air stream that will flow under the heads.
Is this a known issue with the drives? What do people who restore/repair th=
YEs. As with all foam, it decays with time.
ese do to eliminate this source of contamination into
the cartridge? I woul=
d like to address this before I install a new absolute filter.
Even if you could find a NOS seal (and I did have a few), it will msot
likely have decaysed by now, or at least won't last much longer. But the
foam is not critical, just get something and cut the right shape to fit
the end of the ducght and glue it in place. Should be fine.
There is another foam seal on the input side of th eblowwer, between the
blower and the cardcage. Remove it!. There is plenty of airflow over the
board without it, and if you leave it in place it wil lend up
contaminating the absolute filter. Remove the blower (4 Allen cap screws)
and peel it off.
Any tips for a substitute for the CE pack when I get to the point of loadin=
g heads and adjusting the drive?
Not really. And those of us who ahve the CE packs do lt lend them out
generally...
However, unless you want to be able to exchange packs with other drives
there is no need to align the heads.. The drive wil lread and write packs
formated on itself with no problems.
Also, unless you remvoe the heads form the positioner, or dismantle the
optical transducer, or soemthign liek that, there is not really any need
to realign the heads. You can remvoe the compelte positioner, or the
spindle, put them abck and the alignment will be OK. Yes, I know the
manual tells you to check the alignment if you remvoe said parts, and
it;s a good ide to do so if you have the CE pack, but I have never needed
ot adjust anything.
-tony
4091
days inactive
4091
days old
3 comments
4 participants
participants (4)
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ard＠p850ug1.demon.co.uk -
Carl.Claunch＠gartner.com -
hachti＠hachti.de -
quapla＠xs4all.nl