[GreenKeys] 33-ASR Paper Tape Punch Faults

[teletypeparts at comcast.net]

Absolutely correct, Doug.  
  
Check this advice first.  The carriage should return and stop, no bounce, no bang, no slowing down.  
  
Also, make sure you are typing, punching a tape or programming the computer to generate a CR, then LF to give the carriage time to return.  A DELETE is nice after the LF if possible.  CR, LF, Rubout or Delete.  
  
Wayne 

----- Original Message -----

From: "Douglas W Jones" <douglas-w-jones at uiowa.edu> 
To: "GREENKEYS BULLETIN BOARD" <GreenKeys at mailman.qth.net> 
Sent: Monday, October 5, 2015 3:07:45 PM 
Subject: Re: [GreenKeys] 33-ASR Paper Tape Punch Faults 

On Oct 5, 2015, at 1:26 PM, teletypeparts at comcast.net 
 wrote: 

> Try this.  With the carriage returned in the dashpot, loosen the two screws holding the dash pot and move it just a little to the left.  Tighten screws and try it.  Make sure the dashpot it square to the plunger.  Also the plunger and dashpot should be cleaned with solvent on a rag and lightly coated with oil.  After cleaning and lite coat of oil, hold onto the carriage as you type the first CR as the plunger will likely not be aligned to the dashpot. 

Also, there's a lever on the vent on the back of the dashpot that 
controls how airtight it is.  Opening the vent too far allows the 
carriage to slam to the left with a bang.  If the vent is closed 
too far, the carriage will take too long to reach the left margin 
and the first character you print may be smeared and not solidly 
on the margin because it was printed while the carriage was in 
motion. 

                Doug Jones 
                jones at cs.uiowa.edu 
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