Hi guys, I have a mazak slant turn 30-atc. For the last 6 months we have been dealing with alarm 204 spindle controller malfunction popping up. The alarms sparactic an doesn't come up every time we use the machine. It's happen most of the time when you go to increase or decrease the spindle rpm in manual or when running a part it is when the spindle goes to increase rpm on the finishing pass. Sometimes it will stutter like it is trying to switch gears and other times it just automatically alarms out when it kicks up the rpm. We have talked to a few diffterent people about it but still haven't solved the problems. Just trying to see if anybody has any input, suddestions, or know what the issue could be.