D-10, D-20: Changing the Sound Played by the Keyboard
The Transmit Channel determines which Part is heard when the keyboard is played. Use the following procedure to change the transmit channel:
1. Press MIDI.
2. Press the Display buttons to choose MIDI Upper TX CH.
3. Use the VALUE buttons to change the TX Channel to 1.
4. Press DISPLAY to choose MIDI Lower TX CH.
5. Set the Lower channel to 1 as well.