I just got this machine and was told all it needed was a DC cap replaced to be put back into service. That has since been done, but I'm still getting a 450 Error code and the servo amps all trip their ground fault lights if I have the 3 conductor plug connected to the amps.

The very top right green relay light is triggered, as is the D6 one second from the bottom of that same string when those connections are made.

If I leave those connections hang, I still get an over travel in Z error when I reset the machine. Is this due to a bad limit switch? I've raised the head to the middle of it's travel (manually) and this error trips as the brake is released on the ball screw.

I don't have the schematic, so I'm pretty much running blind here.