Kawai Anytime Owner's Manual page 13

VOLUME of metronome
Press the Metronome button and the VIRTUAL TECHNICIAN button at the same
time to put the piano in Volume setting mode. Let go of the METRONOME button
and VIRTUAL TECHNICIAN button and press "VALUE +" or "VALUE - " button
to change the volume. The volume changes in the range of 1 - 10.
The volume level is displayed.
If you press down the METRONOME button, it goes back to Beat setting mode. If
you press the VIRTUAL TECHNICIAN button, the metronome function turns off
and switches to VIRTUAL TECHNICIAN mode.
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