[GreenKeys] 28KSR

[WA5CAB at cs.com]

Francis,

If the jacks were added by the previous owner, probably they are simple 
jacks and go directly to the selector magnets and the keyboard contacts.  Or 
maybe through the original LESU to the magnets and contacts.  But look at the 
jacks and see whether they are simple phone jacks or have switches built in. 
 If they are simple phone jacks, you can series the magnets and keyboard by 
using two plugs with a jumper running from one to the other and the two 
wires in the cord going from the remaining two plug terminals to the ST5000.  
If the physical spacing of the two jacks is correct, you could use a dual 
plug.  You could also get a jack for the keyboard that has normalling contacts 
and wire it such that with no plug in the jack, the keyboard is in series 
with the magnets.  With a plug inserted you could get the keyboard on the plug 
and a jumper to keep the magnets connected to a plug inserted in the magnet 
jack.

Or you could simply remove the two wires from the keyboard jack and one 
wire from the magnet jack, tie the magnet and one keyboard wire together and 
connect the remaining keyboard wire to the jack terminal from which the magnet 
wire was removed.  

None of which would be exactly original, I guess.

In a message dated 11/06/2011 05:06:32 AM Central Standard Time, 
fsurovec at gmail.com writes: 
> Got this great 28KSR that is all in one piece with a lot of work done to 
> it in the past with respect to parts replacement, etc. I am trying to get 
> it operational on air and have a question for the group.
>   
>  At the bottom of the cabinet the previous owner has two jacks, one for 
> the keyboard, one for the selector magnets. I applied power from my ST5000 to 
> the magnets and stopped the machine from running open. This of course did 
> nothing for the keyboard.... I have forgotten more than I can remember 
> right now..... but do I have to jumper between the keyboard and the magnets for 
> the machine to function like a typewriter? On my old machines 35 years 
> ago, if I remember correctly, there was a quarter inch plug that exited the 
> machine which went to the ST5000 loop supply and was functional for both the 
> keyboard and the magnets. What have I forgotten?
>  Thanks.
>   
>  Francis
> 

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480
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