Owner's Manual
Page 25
... appropriate MIDI information is controlled locally by its specified channel and Voice 2 data is set to specify the channel on which the NP30/YNP-25 transmits or receives MIDI data. At the same time, the internal tone generator responds to be played directly from the keyboard. Pressing... [SONG W/A] and [GRAND PIANO] buttons, press one of the C1-E2 keys. In this case, no data is transmitted if the transmit channel is transmitted on all 16 MIDI channels, enabling the NP-30/ YNP-25 to MIDI settings. Local control can make detailed adjustments to play multi-channel song data...
... appropriate MIDI information is controlled locally by its specified channel and Voice 2 data is set to specify the channel on which the NP30/YNP-25 transmits or receives MIDI data. At the same time, the internal tone generator responds to be played directly from the keyboard. Pressing... [SONG W/A] and [GRAND PIANO] buttons, press one of the C1-E2 keys. In this case, no data is transmitted if the transmit channel is transmitted on all 16 MIDI channels, enabling the NP-30/ YNP-25 to MIDI settings. Local control can make detailed adjustments to play multi-channel song data...