[GreenKeys] ASR33 tape reader

[Don Robert House]

>On Wed, 9 Apr 2003 18:35:54 -0500, you wrote:
>
>>If the shipping screw has been removed you can lift the typing unit
>>up off of its rubber supports.
>
>No problem, that's long gone. Keyboard and printer/punch, in local
>mode, work flawlessly.
>
>>   You mentioned lubrication earlier.  It is very tricky to lube a
>>reader.  The only lube I use is grease on the springs.  The contacts
>>need to be clean "as a whistle"
>
>they appear to be but I will check and clean them again. I was
>careful not to slobber oil or grease on the contact common bar.
>
>>Another thing to check is to make sure the Molex plug is firmly
>>seated in the reader power supply in the base of the machine.
>
>that's not a problem - in fact, since my p/s did not have a reader
>power pack (it was originally part of a KSR33), rather than try to
>find an original board and then have to change the caps anyway, I
>laid out and had fabricated (in Bulgaria - cheap) a small PC board
>made exactly to Teletype's schematic that fits inside the 33
>(about where the original was supposed to go). Anyway it's working
>perfectly on manual start/read/stop modes. Can't test it on auto
>until I find out why the XON and XOFF function levers aren't
>lifting to latch the function pawls. Codebars don't seem to be
>rising/moving far enough.
>
>>should also check the position of the distributor rotor and make sure
>>the face of the distributor is nice and clean as well as the two
>>brushes.  The machine screw that holds the rotor needs to be snug.
>
>I've already done so earlier, when I was having trouble getting
>anything to work right (keyboard contacts deformed and dirty,
>printer not printing correctly etc). The rotor tip is lined up
>with the mark on the distributor board.
>
>thanks for the tips!
>-Charles

You are welcome Charles,
I have a new old stock read power pack at the museum.  Let me know if 
you would like to try it.
Best regards,
Don
-- 
--------------------------------------------------------
Don Robert House
North American Data Communications Museum
URL: http://www.nadcomm.org
Computer Museum of America
URL: http://www.computer-museum.org