Kawai CN39 Owner's Manual page 27

 Entering the Reverb settings menu
Press and hold the REVERB button.
The Reverb settings menu will be shown in the LCD display.
 Adjusting Reverb settings
After entering the Reverb settings menu:
Press the  or  buttons to move the selection cursor over the
desired setting.
Press the  or  buttons to adjust the selected setting.
* To reset the current setting to the default value, press the  and 
buttons simultaneously.
 Exiting the Reverb settings menu
Press the FUNCTION button (EXIT) to exit the Reverb settings
menu.
* Reverb settings are independent for each sound variation.
* Any changes made to the reverb type, settings, or on/off status will
remain until the power is turned off.
* Preferred reverb settings can be stored to a Registration memory for
convenient recall, or to the Startup Setting memory for automatic
selection when the instrument is turned on. Please refer to pages
35 and 79 for more information.
 buttons:
Adjust selected setting.
  buttons:
Move selection cursor.
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