over the weekend the Fanuc Robo Drill 14a CNC Mill encountered a sequence of alarms.

1012-in the tool change area
1009- TCZ limit sw is defective
500- over travel z

the alarms will not reset, powering down will not get rid of them either. I tried to access the quick nc function but the machine will not respond to that either. The X and Y axis will move in manual mode but no such luck for the Z axis.

Any help would be greatly appreciated!!!