This is an article by Sweetwater explaining about the D-Beam's infrared operation. I don't know if any calibration routines are hidden in the VA76 or other Roland arrangers, but you might contact Roland and ask them.
http://www.sweetwater.com/expert-center/techtips/d--06/02/2003

Sorry, Mo, but you are completely off-base here...

[This message has been edited by Diki (edited 02-18-2007).]
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An arranger is just a tool. What matters is what you build with it..!