Kawai ES920 Owner's Manual page 117

 Preset Chord
Full keyboard:
Used to play the melody only. The accompaniment is controlled automatically.
 C hanging the ACC Mode setting
After entering the Rhythm Settings menu (page 113):
Press the or MENU buttons to select the ACC Mode settings
page, then press the or VALUE buttons to cycle through the
different chord recognition methods.
* The Auto Fill-in feature will be disabled when the "Preset Chord"
method is selected. However, the Rhythm Section will automatically
play a fill-in pattern at the end of the final bar of the specified Preset
Chord sequence.
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