Korg D1 Owner's Manual page 13

*3: Specifying the auto power-off function
When 4 hours have passed without a key pressed on the
keyboard or without an automatic performance played,
the instrument is automatically turned off. To disable this
function, turn off (oFF) this function. The default setting
is this function turned on. If this setting is changed, the
new setting is saved and remains selected, even if the D1 is
turned off.
1. Enter the Function mode, and then press the VIBES/
GUITAR button.
The VIBES/GUITAR sound button lights up, and the
setting (on) appears in the display.
2. Select the on/off setting with the + or – button beside
the display.
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