[MakinNC]

First I'm very new to K40 repairs, so please try not to be too technical, so I understand.

I recently purchased a new XY Axis for my K40 and installed it. I hooked up the X (right to left) limit switch using the wires old limit switch wires located by the step motor on the right hand side.

Question is how do I hook up the Y (front to back) axis limit switch? I didn't see any other wires that would connect to that switch.

Any assistance would be greatly appreciated.

[Fred27]

The Y limit switch is an optical switch rather than a mechanical microswitch. The wiring is shared with the Y axis stepper motor in a ribbon cable. Why is it different to the X axis? Nobody knows.

[MakinNC]

The Y limit switch is an optical switch rather than a mechanical microswitch. The wiring is shared with the Y axis stepper motor in a ribbon cable. Why is it different to the X axis? Nobody knows.

Fred - Forgive my ignorance, as I am learning as I go. So there is some type of senor on the PCB board that the ribbon cable runs into?

When I turn the machine on it does this http://youtu.be/E_kVOUNAPh4

Suggestions to what might be causing it?