I have a 1981 kitamura mycenter 4 and the AC spindle servo unit i think is given me problems......when i try to run a program, manual, or orient the spindle, i couldnt get it to turn. i could hear a high pitched noise right before it goes into estop with a #8 alarm. after further investigating it i found a couple small .3 amp micro fuses blown on the spindle board....i replaced 5 of the 8 fuses and now when i try to run it it only spins 1/8-1/4 turn then it estops with the same alarm 8. I dont have any more knowlage of these units to decide what to check next. any ideas how be helpful! i know i could send the unit to fanuc but just trying to find a cheaper route!