Initializing The Current Live Set Sound With The [Exit] + [Settings] Buttons - Yamaha CP88 Supplementary Manual

Initializing the current Live Set Sound with the [EXIT] + [SETTINGS]
buttons
[EXIT] + [SETTINGS]
You can now initialize the current Live Set Sound by pressing both the [EXIT] and [SETTINGS] buttons. Only the current data is initialized.
The data stored previously is not initialized.
CP88/73 Supplementary Manual 13