Got this Machine 10 years ago and this is my first problem. When the machine goes home to the Z position, It goes up and starts to stutter up and down and I get an Alarm 1190 #2 Spindle not in position. I shut of the machine and turn it back on, and it goes back home in the Z position. It first happened when it went for a tool change. It put tool in rack and when spindle went up to get other tool in went up about 90% and the machine stopped and the spindle just starting going up about an inch and down an inch over and over really fast. I could run the machine but have to manually change tools, it seems to happen only when the machine goes home in the z position. This 1190 alarm is not in any of my fanuc or komo books. Any help much appreciated.
Regards
Guns