On Sun, 24 Apr 2016 22:19:45 -0700, Don Y wrote:

Pick any three buttons on the control except power, start, or cancel.

Now press this button sequence RAPIDLY (within eight seconds)
Button 1, Button 2, Button 3,
Button 1, Button 2, Button 3,
Button 1, Button 2, Button 3
You are pressing 9 buttons in 8 seconds so it needs to be pretty quick.)

Bummer. Tried it many times. Nothing happens when I press any three
buttons like that in succession three times.

Will dig in further ...