Hi Guys,

My mate has an old CNC machine which his dad imported from china. I just recently swapped over the old pendant hand controller to a newer model(thanks to RussellK for the guidance). Before I swapped over the controller I turned on the machine on and played around with the movement. The X and Y axis was working fine. The Z axis wasn't working. I didn't look into it and continued with the swap over.
After I had swapped over the controller the machine was turned on and running, but still the Z axis was not moving.
I think there maybe a wiring issue somewhere. I'm not sure where to begin.

Can anyone provide me with any advice on where to start looking for the problem?

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thanks in advance

Bao