HP-IL device Seal s5801c

[Erwin]

(02-07-2021 03:22 PM)Dave Frederickson Wrote:  

(02-06-2021 06:55 PM)John Keith Wrote:  In any case I think that it would be safe to connect the transformer briefly to 120VAC and see if the logic circuitry is getting 5V.

I think this is a bad idea. Typically, industrial chassis that accept modules, like this one, provide DC power from a separate module plugged into the chassis backplane.
The transformer connections are probably the output to the AC motor.

Dave

Interesting thought. Yes this could be a possibility. To be on the secure side it would be necessary to look a the layout of the platine backside too, so we could describe the main components for the power part and the logic circuit. It‘s an interesting project.
Erwin