JV-30: Changing the Local Settings
When using a MIDI keyboard with a computer based sequencing program Local
Control should be turned off to prevent doubling of notes. Use the following
procedure to turn Local Control on or off in the JV-30.
1) Press MASTER so it is lit.
2) Press MIDI and use the PARAMETER buttons to select "Local."
3) Use the VALUE buttons to select "ON" or "OFF."