I am presuming this is a lathe because it has an OT control not a machining center which would have an OM?? To home it you should be able to jog it a minimum of 1 inch in X axis toward spindle centerline ( -X) and in Z axis toward the spindle (+ Z).When you jog it do not interrupt the movement by releasing the jog button before reaching the 1 inch minimum. Press the + X button and turret should retract away from you until it stops at X home .When it does press the + Z button and turret should move to its Z home. I hope this helps......it may or may not get you there. 2 of the 4 lathes I program and set up have Fanuc OT controls.