Problems with the button " 16 levels "

Problems with the button " 16 levels ". The button works, but sometimes does not include function. To correct a problem, I switch off Akai, or I delete the information with INTERNAL. Passes time and it again does not work. That it can be? A program mistake? How to solve this problem?

if you machine is under warranty take it back. Thats my suggestion. You could also try to return to factory settings by depressing erase on startup