Roland GO:PIANO88 88-Note Digital Piano with Onboard Bluetooth Speakers - Manual (Page 7)

Playing Demo Songs
This instrument features 10 wonderful demo songs. Please refer to
Demo List for details.
Play the demo songs.
Press the [METRONOME] and [TWIN PIANO] buttons at the same time
to enter Demo mode and start playing the demo songs in a continuous
loop.
Select a demo song.
Press and hold the [METRONOME] and [TWIN PIANO] buttons at the
same time, then press one of the keys marked [1~9~0] to select a
desired demo song.
Stop playing the demo song.
Press the [METRONOME] and [TWIN PIANO] buttons at the same time
to stop the demo and exit Demo mode.
Rotate the [VOLUME] knob clockwise to increase the master volume or
counter-clockwise to decrease it. Adjust to set the desired volume level.
Note:
If the speakers do not produce sound, please check if the master
volume is set too low. Then check if the speakers are muted because
headphones are plugged into the PHONES jack and the Phones Sense
function is in use.
1. Make sure the instrument is properly connected to power supply.
2.
Rotate the [VOLUME] knob counter-clockwise to set the master
volume level to minimum.
3.
Press the [POWER] switch. The button LED will light up, indicating
the instrument is powered on
4. When you are ready to turn the instrument off, press and hold the
[POWER] switch for a second. The button LED will turn off.
Note
In order to save energy, the instrument will automatically shut down after
30 minutes when not in use. (See Auto Power Off).
07
Turning the Power On or Off
Adjusting the Master Volume