Yamaha CLP - 820 Musical Instrument User Manual

Check your power supply
Make sure that your local AC mains voltage matches the volt-
age specified on the name plate on the bottom panel. In some
areas a voltage selector may be provided on the bottom panel
of the main keyboard unit near the power cord. Make sure that
the voltage selector is set for the voltage in your area. The
voltage selector is set at 240V when the unit is initially
shipped. To change the setting use a “minus” screwdriver to
rotate the selector dial so that the correct voltage appears next
to the pointer on the panel.