Adjusting The Keyboard; Tuning The P-100 - Yamaha P-100 Owner's Manual

Tuning the P-100

Electronic pianos have one advantage over their acoustic counterparts: they are much easier to tune. You can fine-tune
the P-100's keyboard upward or downward within a range of about 100 cents.

ADJUSTING THE KEYBOARD

You can set the tuning to a value from –64 to 63. Each step raises
or lowers the tuning by about 0.78 cents. The default value is 0,
which corresponds to 440 Hz at A3.
When you locate an appropriate tuning value, release the [TUNE]
button. The P-100 will display the new value for about a second,
then exit the function automatically.
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