Identified the other night.
If you home / zero machine. And try and use the auto touch plate where the X is somewhere under 43.5 it throws an Alarm and fails after checking Z.
See this thread for more information and where we confirmed the results were reproducable:
Update - this also happens on the Y access somewhere between -603 (works) and -608 (fails)
I don’t want to keep testing coordinates but basically sometime shortly after -603 on the Y if you initiate a XYZ auto probe, the machine throws an Alarm 2 when trying to zero the Y axis for the first time.