MC-303: Turning the Metronome On/Off
The MC-303 allows you to turn the metronome on and off from the front panel. To
toggle the metronome on and off, press SCALE/MEASURE and FUNC simultaneously.
This function works in all modes with the following exceptions:
1) Real Time Record, when the metronome is set to OFF in the System Setting
2) Song Record (metronome will never sound).