Korg D1 Owner's Manual page 6

Turning the instrument on
Press the power button to turn on the D1. (Fig. 2)
When the instrument is turned on, the buttons on the control panel will light
up (the power button will not light up).
To turn the instrument off, press the power button again.
When the instrument is turned off, all functions and parameters, except
the auto power off function return to their factory default settings.
Auto power-off function
When 4 hours have passed without user input or demo performance, the
instrument will be automatically turned off. To disable this function, turn
off the auto power off function (see page 13).
Adjust the volume
Rotate the VOLUME knob that's located next to the power switch toward
"MAX" to raise the volume level. Rotate it left toward "MIN" to lower the
level. (Fig. 2)
The VOLUME knob controls the output level of the headphones jack and the
LINE OUT jacks.
It is always better to start with a low volume and then increase gradually.
Using the music stand
Attach the sheet music stand as shown in Fig. 3.
6
Fig. 2
Softer
Fig. 3
Music stand holes
Louder