[GreenKeys] ASR 33 - another question about the reader

[Don Robert House]

Alf,

Wayne is the guru for the 32 an 33.  Take his advice before mine.
I have a box of the feed sprockets here if you need one but normally  
the adjustments on a 33 involve careful bending and making sure  
contacts are in their correct position.
I have even had broken parts work if positioned and held in place  
properly.  Very different little beasties from other Teletype machines.
The manual should show you what you need to know.  Do you have the  
copy of the Model 33 training manual I scanned?  If not I can send you  
a PDF.

Good luck,
Don


On 18 Apr 2011, at 2:50 AM, Alf Fisher wrote:

Don & Wayne,
Many thanks for your comment and helpful suggestions.  I will have a  
look at it tomorrow to see if the top plate is bent up.
IIRC, it looks OK at a quick glance.  I assume there would be creasing  
of the metal somewhere if it was bent.
I just thought that the feed sprocket and tape out sensor were all  
mounted on the frame and it all needs raising up a bit.
Perhaps there a diagram in the TTY manual?

73
Alf
----- Original Message -----
From: Teletypeparts
To: Packard42 at gmail.com ; alf_fisher at tiscali.co.uk
Cc: greenkeys at mailman.qth.net
Sent: Monday, April 18, 2011 12:04 AM
Subject: Re: [GreenKeys] ASR 33 - another question about the reader

Alf and Don,

Sorry to interject, but those 4 screws under the reader only adjust  
the tape reader to the cover for best fit.  If the feed sprocket is  
low, likely the brushed aluminum top plate has been bent up and must  
be carefully bent back to original fit.  Also its possible that the  
cover is pushing on the top plate and then the 4 screws may help.

The reader stopping is almost surely the tape out contacts which can  
be easily adjusted by bending them both, but if the frame is bent as  
described above, that would be the first thing to fix.  With the cover  
off do a lot of visual checks before making any adjustments.

73's

Wayne



-----Original Message-----
From: Don Robert House <Packard42 at gmail.com>
To: Alf Fisher <alf_fisher at tiscali.co.uk>
Cc: greenkeys <greenkeys at mailman.qth.net>
Sent: Sun, Apr 17, 2011 6:10 pm
Subject: Re: [GreenKeys] ASR 33 - another question about the reader

Yes Alf,
Under the reader is a central lock nut.  Surrounding the lock nut are
four adjusting screws to position the reader to operate properly.
In addition sometimes the contacts come out of the comb that holds
them in place. You can usually see and reposition them if necessary.

Don
K9TTY

On 17 Apr 2011, at 3:17 AM, Alf Fisher wrote:

Don et al,
  From reading the question posed by Bill, it prompts me to ask about a
problem I have with the reader on the museum ASR33.

It will run if I hold down the cover but for some reason it stops when
I let it go.

I think it could be the Tape Out sensor but I also noticed the tape
drive sprocket seems a bit low down and doesnt engage properly with
the holes in the tape.
Is the protrusion of the whole assembly adjustable?

Any ideas?

Regards,
Alf
G3WSD


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