[GreenKeys] model 28 KSR

[Frank Carraro]

The complete wiring diagrams areavailable in green keys relatedinternet sites.   Be advised that a common wiring arrangement isto short circuit the selector circuitwhen the AC s off so the loopis not open.  Much of the wiringis routed through the ESU (theUnit that sits behind the typer)  There are many different variations


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On Sunday, June 7, 2020, 4:53 PM, til128 at juno.com <til128 at juno.com> wrote:

On many machines the terminals 21-22 are 110VDC. Be careful!

TT

---------- Original Message ----------
From: "Jim Cooper" <jim.w2jc at gmail.com>
To: Virgil Bierschwale <vbiersch at gmail.com>
Cc: greenkeys at mailman.qth.net
Subject: Re: [GreenKeys] model 28 KSR
Date: Sun, 07 Jun 2020 16:23:08 -0400

I think you would be very wise to take an 
OHM METER and track the wiring from those 
terminals back to the terminals on the selector 
magnet(s) and be sure that's where they go ... 

First and easiest is to put the ohmmeter across 
those two terminals ... do you see resistance that 
would suggest the selector magnet windings?

On 7 Jun 2020 at 14:40, Virgil Bierschwale wrote:

> I've been studying the schematics
> for this model 28 I received last
> year and if I understand them
> correctly, it looks like I want to
> hook up the loop supply to pin's 21
> and 22. Looking at the wire colors,
> they are in fact a red wire and a
> black wire and nothing is hooked to
> them. 
> 
> I have attached a picture of it.
> 
> can anybody verify that as I don't want to screw anything up.
> 
> Thanks,
> 
> Virgil
> N5IVV
> 


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