The Yamaha AN1x Synthesizer mailing list

I've had the an1x for about a year.  No problems at all, however I am 
wondering what sort of midi data the thing is constantly sending??  I 
have a unitor 8 and the an1x is the only device that is causing the 
unitor to constantly flash on it's corresponding midi channel.  I 
have flipped thru all submenus, but cannot find the cause.  Anyone 
know what this thing is constantly sending, can it be disabled?
Its not a problem, I am only curious.