JD-800: Receiving Program Change Messages
On the JD-800, you can change a Patch by sending a Program Change message from
your sequencer or controller. Use the following procedure to make sure the
JD-800 is ready to receive program change messages:
1) Press SYSTEM SETUP.
2) Press F4 [Rx MIDI].
3) Use INC or DEC to select "ON."
4) Press EXIT.