That vintage a machine, I would suspect it has DC motors? Did you check the brushes and also inspect the commutator. It is normal to see the display run even when the motor is not turning for some reason, and then it will reach a following error and then display fault message.
If it was a mill, I would say maybe the Z axis counterbalance is not working but on a lathe Z is usually a Horizontal axis.
Al.
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CNC, Mechatronics Integration and Machine Design.
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E. |