PS.. Hi again...I forgot to mention that I am doing these tests with the Wallbox and stepper/stepper power supply outside of the Jukebox and disconnected from it..Looking at the diagram I cannot really tell if there is any feedback from the 40 electromagnetic relays in the Jukebox that might afftect...

Hi Ron..Thanks for the response.....I dont see a clutch in the wallbox but I might be missing something..In the wallbox the selection chain wheels manually drive a ratcheted black plastic gear with a contact plate on one side..Through the centre of this black plastic gear is a free turning shaft att...

.Hi..I am the owner of a working AMI "C" Jukebox and AMI 40 Wallbox and matching stepper..All three were working fine until the stepper unit (stepper motor) suddenly would not latch or stop when a selection was made.>The jukebox works excellent by the way still on its own and voltage to th...