I have a 1985 Matsuura MC-500VII that I have had for almost a year now. The other day when I tried to tool change it gave me a Error: 400 (Seq Error2) With User Message 411: ([16] M06 Error 3) The manual is not very helpful and does not give more information on this error code. I was wondering if anyone had any pointers on where to start debugging. I have debugged various issues with the tool changer before but only when I had some idea of what the problem might be.