Generalmusic 271221 Owner's Manual page 121

NOTE: As an alternative to using RESET ALL, you can also try
the MEMORY CLEAR procedure if you are having problems and
need to clear everything from memory. Although it takes a little
longer to perform than RESET ALL, MEMORY CLEAR is a more
thorough procedure and will ensure that the instrument starts up
from cold with the memory completely empty.
To perform the MEMORY CLEAR function, turn the instrument
off and leave it for a couple of seconds. Before you switch it back
on, start to rotate the dial and continue to do so as you switch the
instrument on again. Keep rotating the dial until you see the
MEMORY CLEAR prompt.
Press ENTER to complete the operation.
System 9•7