I know the model now.
I don't have circuits of the PCB with the relays on it.
It converts the Mach3 signals for speed control when the the front panel switch is not on local.
If you plug the front panel ribbon direct to the motor PCB, you can bypass this PCB to see if it is causing the problem.
All these files (except the BOB circuit) have been scrounged off the web.
There may be errors in them.
Super X3. 3600rpm. Sheridan 6"x24" Lathe + more. Three ways to fix things: The right way, the other way, and maybe your way, which is possibly a faster wrong way.
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