I have a 1988 qt15 with a sub Chuck. The drive for the sub check is bad and I want to find a parameter that can shut this function off. I don't use this sub Chuck, but it will not allow me to power up the lathe because of this drive not working. Does anyone know of anyone doing this. (Knowing how to shut the control from sensing the sub Chuck). I called mazak, but they are not interested in tackling this problem.

Thanks