[GreenKeys] Keyboard Contavts

[E.]

I pulled up a M15 diagram… it’s not the usual diagram I reference off of, but the attached shows those four contacts (9 thru 12).  I jumped nine and 10 to keep the motor running when the typing unit is off… I believe.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: Screenshot 2026-02-28 at 4.33.33?PM.jpg
Type: image/jpeg
Size: 52832 bytes
Desc: not available
URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20260228/680746df/attachment.jpg>
-------------- next part --------------


> On Feb 28, 2026, at 4:23 PM, E. <hanyou at xsmail.com> wrote:
> 
> 
> Yeah, I believe that’s the other half (just going off of memory) — two contacts (positive/negative) for the AC motor (to keep it from spinning when the printing unit is off) and the other two (positive/negative) are for the loop current.
> 
> I had to jump two of the contacts on the base for some reason (many years ago - last decade)… it’s in the wiring schematics as an option, but I don’t remember why.  Maybe because I don’t have a polar relay?… don’t remember -_- .