Things to test:
•Wiring (plug connectors)
•stepper driver controller
•stepper driver
•software
•PC
•parallel cable
It looks like the stepper driver is broken. I trouble shooted it by replacing the Z axis driver with the Y and the X driver and the stepper motor seemed to work fine. My cnc is a 6040 cnc and it had a YOOCNC YOC335. Inside of it was a TB6560 TB6560AHQ to be exact. I will try to fix it by replacing this with a TB6600 stepper motor driver instead because I cant find the exact same stepper motor driver anywhere.
Mine was the same as this one that i found online.
