Pro Audio Support

Q:
Setting the MIDI Transmit Channel on a P80
 
A:
1. Press the [FUNCTION] button.
2. Press the 'TEMPO/FUNCTION' UP or DOWN button until 'F8.Y' is selected.
3. Press the [+/YES] button to confirm the selection.
4. Press the 'TEMPO/FUNCTION' UP or DOWN button until 'F8.1' is selected.
5. Press the [+/YES] and [-/NO] button until the desired MIDI transmit channel option is selected.
6. Press the [FUNCTION] button to exit 'Function' mode.

Reference: Owner's Manual p. 32, 33