Casio KX-101 Operation Manual page 25

Music Programming
] Set the FUNCTION selector to KEYBOARD.
Ds: the Keyboard Mode to MEMORY.
|e) | a
L
While pressing the RESET button ( "S§"
(all clear operation).
, press the Clear button (
CLEAR
oO
* Please be sure to perform this operation before attempting to input a
new program.
=og=