Applies to: X-Station
Press the 'global' button to enter the global menu and press page up until you get to the 'Cal Aftertouch' Page. Press the top and bottom keys of the Remote at the same time and you will see the number of keyboard octaves on the unit appear on the left hand side of the screen.
Once you have done this press 'write' to save. Now when you turn on the unit it will recognise what model it is.