Yamaha CS1D Owner's Manual page 200

9. If you selected Effect recall in step 7, use the but-
tons in the lower left of the popup window to select
the internal effect (1–8) for which data will be
recalled, use the list at the right to select the effect
library data that will be recalled, and then click the
OK button.
10. In the same way, assign events to other program
numbers as well.
11. Transmit a program change (or bank select + pro-
gram change) from an external device on a valid
MIDI channel.
The event assigned to that program number will be
executed. When you execute one of the assigned
events on the CS1D, a program change (or bank
select + program change) will be transmitted to the
external device.
Chapter 14. MIDI/Time Code
141