Yamaha sonogenic SHS-300 Owner's Manual page 18

Turning on the Power / Setting to Standby
1.
Press the [P] (Standby/On) button to turn the power on.
The [VAR] lamp is lit in red when the power is on.
Adjust the volume as desired while playing the keyboard.
If the overall volume is low, or no sound is heard, please confirm "Troubleshooting" on page 31.
CAUTION
Do not use the instrument or headphones for a long period of time at a high or uncomfortable volume
level, since this can cause permanent hearing loss.
NOTICE
While turning on the power, do not attempt any other operations, such as pressing the keys. Doing so
may cause the instrument to malfunction.
2.
Press and hold the [P] (Standby/On) button for longer than one second to enable
standby mode.
CAUTION
Even when in standby mode, electric current is still flowing to the instrument at the minimum level. When
you are not using the instrument for a long time, make sure to disconnect the USB power adaptor from
the AC outlet, or remove batteries from the instrument.
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SHS-300 Owner's Manual
[VAR] lamp
1. Power on
Adjust the volume