[GreenKeys] Teletype 33ASR

[gil smith]

Hi Don:

It's great to see this kind of information, from someone who knows the
machines well.  One of those must-file emails, that will help folks get
their machines running.

If you ever get bored, write some more stuff like this down and post it.
On any model machine.  A lot of people will appreciate it.

thanks,

gil


At 08:26 PM 7/2/02 -0700, you wrote:
>The problem with 33s is that the reader, the keyboard, and the 
>answerback drum contacts are all in parallel.  They all have to be 
>positioned properly or all you will get is garble.  The distributor 
>at the right rear of the machine is responsible for serializing the 
>parallel signals for the selector magnet driver circuitry..  Almost 
>all SMD cards show some burning on the PC board.  The ceramic 
>resister gets quite warm so do not worry and do not touch it.
>
>1. Make sure the disributor clutch is tripped every time you hit a key.
>
>2. Try holding down the tape out contact on the reader with the 
>reader control lever in the run position... then cover each of the 
>reading fingers to see if the holes in the tape follow what you are 
>causing to be spacing.
>
>3. The brush holder on the distributor should always stop with the 
>small pointer at the top right where a trace leaves that segment. 
>There is also a small "tit" on the pc board there.
>
>4. Make sure you have an adjustment manual.  I can send you one if you
need it.
>
>5. Make sure the "H" lever is adjusted properly.  It is the part that 
>looks like an "X" with a slot in the middle.  It connects the 
>keyboard reset to the distributor clutch assembly.  It has to be just 
>right or the machine will not print right.
>
>6.  Look for rust marks and oil anything that looks rusty (except the 
>selector mechanism.
>
>7. Make sure you have a good stiff rubber print head on the print 
>hammer assembly.  Most of them turn into mush after a few years.  I 
>am looking into having them reproduced..
>
>8. If all else fails there may be a former 33/32 repairman in your 
>area that can help.  Where are you located?
>
>Regards,
>Don
>
>Curator - NADCOMM
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>

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