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:
- Press MASTER so it is lit.
- Press MIDI and use the PARAMETER buttons to select "Local."
- Use the VALUE buttons to select "ON" or "OFF."
- Press MASTER so it is not lit.
Owner's Manual: https://www.roland.com/us/support/manual_archive/