We have a Mazak QT-20 HP with the T-Plus contol and every so often a alarm # 261 pops up. It is the "Head Lubrication Alarm". There is plenty of way oil and hydralic oil in it and all seem to have a decent flow. When we bought the machine it was used and had a bad board. When we replaced the board it also lost paramters. The seller provided us with a copy of the parameters from a machine that he had in his shop that was the same model. Aftger searching other forums I was pointed towards a parameter that turns on/checks spindle coolant. Since the spindle coolant pump is a optional piece of equipment it seems that the machine we received the parameters from had this piece of equipment and ours does not. Not sure if I correct but it seems that is what is causing our alarm. If that is true I can't figure out what parameter I need to correct. I have contacted Mazak about this and they where no help. Thanks in advance if anyone can help.