[GreenKeys] 28KSR question...

Wed May 13 11:17:56 EDT 2020

That picture leads me to a question, is the right connector reversed? 
That is the locating pin is towards the front as opposed to the back as 
is the left connector.  I always wondered how they kept you from cross 
connecting the two since they were the same part number.

John, W9DDD

On 5/13/2020 9:35 AM, Steve Garrison wrote:
> Looks like it is time to break out the solder iron!
> 
> For testing purposed, how about using some mini-clip from the upper pins 
> on the outer unused connector to the correct pins on the bottom of the 
> inner connector.   Once you have verified which wires need to be 
> relocated and to which pins, then it’s time to rewire.
> 
> Steve G./N4TTY
> 
> *From:* greenkeys-bounces at mailman.qth.net 
> <greenkeys-bounces at mailman.qth.net> *On Behalf Of *E.
> *Sent:* Wednesday, May 13, 2020 10:01 AM
> *To:* Green Keys <greenkeys at mailman.qth.net>
> *Subject:* Re: [GreenKeys] 28KSR question...
> 
> HI Ralph,
> 
> Yeah, I apologize, the first photo I attached last night wasn’t so good 
> ;o … this one (attached) has a slightly better angle, where you can see 
> the four bell wires from the stunk box, going to the unoccupied 
> connector :) .
> 
> 
> 
> 
>     On May 13, 2020, at 7:55 am, Ralph Irish <w8roi at wowway.com
>     <mailto:w8roi at wowway.com>> wrote:
> 
>     Eric
> 
>     For something as elementary and regular as the Bell function, there
>     may not be a great deal of
>     differences in wiring.  For many other things, though, there are
>     almost as many different,
>     'standard' diagrams as there are keys on the keyboard!  Just depends
>     on who was going to be
>     using a machine and how many machines they were expected to buy from
>     Teletype.  Two of those
>     four wires are wired to the switch that activates the bell.  Not
>     certain about the other two.
> 
>     Those switches are manufactured 'two to an assembly' and sometimes
>     had both an open and a
>     closed contact.  Some of the open contacts are held closed by
>     positioning, and the reverse
>     also holds true.  This was set up to be as versatile as possible for
>     anyone doing 'programming'
>     of stunt boxes.
> 
>     If you carefully, and I mean  CAREFULLY, use a live power cord and
>     apply 115V very quickly to
>     terminals 29 & 30, or wherever the bell wires terminate, you should
>     hear a 'ding'.  MAKE
>     CERTAIN THAT EVERYTHING IS POWERED OFF AND ALL PLUGS TO ACCESSORY
>     EQUIPMENT PULLED WHEN YOU
>     DO THIS.  Don't rely on any other switching to assume that it is
>     safe with anything else
>     plugged in.
> 
>     If you get the 'ding' that means the bell is OK, and that there is
>     some other interruption
>     in the Bell circuit.  Wire tracing and an ohmmeter will be required,
>     probably.
> 
>     -   -   -   -
> 
>     I can see orange and yellow wires in the left side photo on the
>     switches and the same colors
>     on the 'occupied' connector in the second photo.  I don't see any
>     wires on the auxiliary
>     connector in the second photo.  The 'occupied' connector should also
>     have the wires from
>     the selector magnets and possibly others from other equipment
>     installed.  Maybe an
>     Answerback trip solenoid, or a print suppression solenoid, etc.
> 
>     That second (auxiliary) connector is there in case more switches are
>     installed to do some
>     'tricks' or stunts, from incoming signal sequences.
> 
>     Good luck!
> 
>     Ralph - W8ROI
> 
>     -   -   -   -   -   -   -   -
> 
> 
>     On May 12, 2020, at 9:18 PM, E. wrote:
> 
> 
> 
>         Thanks all for all the replies ^^ !  I believe the bell contact
>         board is this little guy in the photo attached, right?  It
>         appears that the wires from it go to the empty connector on the
>         right - in the second photo (attached)… so it really goes no
>         where.  If I’m looking at it correctly - why is this???  Is
>         there a way to rectify the situation ;p ?  Will look at the
>         wiring diagram after supper…..
> 
> 
>         <IMG_0054.jpg><IMG_0055.jpg>
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