Yamaha PSR-S500 1, 2, Changing the pitch of the instrument in octaves

Using Various Functions
54 PSR-S500 Owner’s Manual
You can change the playing pitch of the Main and Dual Voices in octave intervals.
1Press the UPPER OCTAVE [+] button to
raise the pitch by one octave.
The newly changed value is shown in the LCD.
Press the [EXIT] button to return to the Main
display.
2Press the UPPER OCTAVE [-] button to
lower the pitch by one octave.
The newly changed value—now one octave
lower—is shown in the LCD.
Press the UPPER OCTAVE [-] button again to
lower the pitch one more octave.
Press the [EXIT] button to return to the Main
display.
Changing the pitch of the instrument in octaves
● In the case of UPPER OCTAVE +1 One octave up
•When a Drum Kit is selected, each percussion Voice assigned to the
keyboard are shifted in location but not pitch.
NOTE
● In the case of UPPER OCTAVE -1
One octave down