Sharp FO-4400 - Manual (Page 42)

Programming Auto-Dial Numbers
40
4
To clear a Rapid Key, press the Rapid Key.
To clear a Speed Dial number, press and then enter the number
with the numeric keys. (If you enter less than two digits, press to
complete the entry.)
5
Press .
6
Return to Step 4 to clear another number, or press repeatedly to
return to the date and time display.
SPEED DIAL
START/
ENTER
START/
ENTER
STOP