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The flashing LED next to the PIANO 1 switch indicates that the interface is ready to transmit a program number. .1, ^-Flashes. -o'- o o o o o □Qicaczaa JAZZ FULL PIANO PIANO E-PIANO E'PIANO ORGAN ORGAN 12 12 2} Select the program number by pressing the corresponding pair of black keys at the lower end of the keyboard. There are a total of 128 numbers possible: the first thirteen black keys give the first and second digits {"00" — "12”) of this three-digit number; the next ten, the final digi