23 Jun
1999
23 Jun
'99
9:01 p.m.
Symptom: Print quality degrading on the ASR-33.
Analysis: Black tar like substance coating the print head apparently
originating on the print hammer.
I didn't look closely but was part #180502 the print head formerly made of
black rubber? Seems like it.
--Chuck
23 Jun
23 Jun
9:30 p.m.
I didn't look closely but was part #180502 the
print head formerly made of
black rubber? Seems like it.
Actually, I think that's incorreect. Someone obviously installed part
#180503, the Opaque Goo Module. You're very lucky to see this rare option
-- it's a collector's item! Maybe you should sell it on eBay.
Seriously, I don't know. What does the print head do? I know there's the
print hammer (which you mentioned) and the type box. Since there's also a
platen and a ribbon, I don't see why you would need any extra pieces.
By the way, I _hope_ there are not one hundred eighty thousand different
parts in that one machine. Do you know how many there actually are, or how
the part number system works? (Maybe the adjustment manual explains that,
but I've never seen the adjustment manual.)
-- Derek
24 Jun
24 Jun
9:14 a.m.
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23 Jun
23 Jun
9:33 p.m.
At 11:01 PM 6/23/99 -0700, you wrote:
Symptom: Print quality degrading on the ASR-33.
Analysis: Black tar like substance coating the print head apparently
originating on the print hammer.
I didn't look closely but was part #180502 the print head formerly made of
black rubber? Seems like it.
Well, not the 'print head' persay, but the impact pad on the hammer is/was
black rubber, and yes they did/do degrade.
Being too lazy (so far) to cut a mold to make new ones, I've found that a
decent stand-in is a round stick on rubber 'foot'. Clean the hammer
thoroughly before afixing the new 'pad' to ensure good adhesion, and check
it regularly.
-jim
---
jimw(a)computergarage.org
The Computer Garage - http://www.computergarage.org
Computer Garage Fax - (503) 646-0174
9:40 p.m.
At 23:01 23-06-1999 -0700, you wrote:
<snip>
I didn't look closely but was part #180502 the
print head formerly made of
black rubber? Seems like it.
Not rubber, per se. The print hammer pads for the 32's and 33's were made
of some sort of bizarre plastic/rubber hybrid. For all I know, Teletype
Corporation patented the stuff...
The accumulated goo is probably due more to ink than hammer-pad residue
(though it couldn't hurt to clean the typewheel -- good ole' 91% isopropyl
alky should work just fine).
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner and head honcho, Blue Feather Technologies
http://www.bluefeathertech.com
Amateur Radio:(WD6EOS) E-mail: kyrrin(a)bluefeathertech.com
SysOp: The Dragon's Cave (Fido 1:343/272, 253-639-9905)
"Our science can only describe an object, event, or living thing in our own
human terms. It cannot, in any way, define any of them..."
7:27 p.m.
New subject: 2.9BSD tcp/ip
Who mentioned this a couple of days ago?
I'm getting a 2.9 system up (had to dd the usr.tar into 4
rl02-sized chunks on my freebsd machine, ftp them to my 2.11 machine via
coax (34Kb/sec!), dd the images from there to perfect rl02s (forced to
skip the disklabel area (first 2 blocks)), carry the rl02s upstairs, dd
them to my fuji 160's virgin 2.9bsd /usr fs (being sure to skip the first
2 blocks manually this time), cat them into usr.tar, and untar).
I'm now insane, but the point is that I'd like to have tcp/ip on this 2.9
machine and I don't know where to start. Please advise.
Meanwhile, I think I'm going to go out and run over some bloated road
kills naked on my Vespa so I can prove to myself that there's something
more foul in the world than the procedure I just mentioned.
Thanks in advance.
jake
PS. Does anyone have a nice tape drive & unibus board they'd be willing
to give to an idiot?
24 Jun
24 Jun
8:52 a.m.
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12:35 p.m.
Thanks everyone, yup there is a rubber "cover" for the print head stud and
you can still buy them from "Western Numerical Control"
(http://www.westnc.com/teletype.html) Their nearby and I've purchased paper
tape and paper but didn't realize they had print head doobers as well.
(they also have replacement type cylinders)
I like Jim's suggestion of using a stick on foot, that would work as well.
Although I do worry about about having it pop off and getting wedged into
the works below.
--Chuck
9139
days inactive
9139
days old
7 comments
6 participants
participants (6)
-
ard＠p850ug1.demon.co.uk -
cmcmanis＠mcmanis.com -
dpeschel＠u.washington.edu -
jimw＠agora.rdrop.com -
jritorto＠nut.net -
kyrrin＠bluefeathertech.com