atcomsystems.ca/forum Forums Other TDM Phone Systems 1A2 and Comkey Telephones & Systems Executone 1A2?!

I got the phone in today. I definitely need a cutdown for this thing. It has printed circuit boards and all kinds of things going on inside. It has only a small terminal board on one side. Most of the cord goes directly to a connector plugged directly into the PCB. The other connector on the cord plugs into the key strips. I really can't modify much of the wiring inside the phone.

See if you can find a Tie 1030/ Tie 10S cutdown. That should work.

Sam

I've spent nearly an hour and a half looking, countless google searches, etc. I'm going batty trying to find a cutdown for this damn thing. Sam, or anyone, if you have any suggestions on how to narrow my search, it would really be awesome. Thanks

I can tell you that most of the pairs start at the top with repetitions of T, R, A and L.

Yea, Ed - but where are the grounds?

Chris, I haven't worked on one of those for 40 years. I haven't a clue where to find one.

Maybe post a request in the Netsuko-Tie forum?

Sam

Chris, the man who modified those Japanese phones for the American market is a close friend of mine. He worked for TIE as their engineering designer for many years. I will ask him to dig out the wiring diagrams for them.

Ed: I did notice that. I took a bare ended pair of wires and ran them down the amphenols and every other pair is a t&r pair. Not sure which of the others is L and A. I suppose a test with the meter from lamp holder to amphenol will reveal which lead is the lamp. Obviously the other will be A. Same goes for the lamp ground I would think. The other problem is when I connect a pair to T&R the phone won't break DT. It's a rotary so polarity shouldn't matter. I wonder if some of the relays and whatnot on the PCB need to be energized for it to work.

Arthur: Thank you!!! That will be an enormous help. There is virtually no information about this phone on the web.

To anyone: I noticed a solenoid attached to the keystrip that when actuated releases the line keys. What purpose did that serve?

Figured out the L and A leads, also found LG, No luck so far finding A1. Maybe in the fridge next to the pickles. Just kidding.

For future seekers of information: wht/blu = tip L1 blu/wht = ring L1 wht/or = A L1 org/wht = Lamp L1 brn/vio = Lamp Ground.

Still working on common A1...

These phones had built-in privacy, so the common tip/ring did come off of the keystrip and through a relay. More than likely, once you get power figured out, this issue will go away.