[GreenKeys] M19 perforator punch question

[eric]

I don't believe the keyboard perforator requires the shaft to be 
rotating, but I could be wrong. You can certainly punch from keyboard 
faster than the character rate dictated by the main shaft rotation.

On 2023-09-23 14:32, Nick England wrote:

> I tried to help out a fellow with a M19 today - and I know nothing 
> about that era equipment - first time I had touched one. So no surprise 
> that I wasn't too helpful figuring out where a stray wire was supposed 
> to go.
> 
> Symptom - This punch magnet is always on in T and KT, off in K.
> 
> Question 1 - can you remove and standalone test just the keyboard/perf 
> assembly with 120vdc (obviously having to rotate the driveshaft by 
> hand).
> 
> Question 2 - is the punch magnet supposed to only get activated by the 
> closure of the cam contact on the keyboard shaft? Or is it one of those 
> oddball things that is always on except to punch via spring power?
> 
> Question 3 - is there a good simplified WD for a dummy like me?
> 
> Thanks,
> 
> Nick the M28 guy
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