Clears the contents of BOOKKEEPING. When clearing, use the
Service Button or View Change Button to bring the arrow (->)
to "YES (CLEAR)" and press either the Test Button or
the Start Button. When the data has been cleared, "COMPLETED"
will be displayed. Press the Test Button or the Start Button to
return to the Menu mode.
Bring the arrow to "NO (CANCEL)" and press either the
Test Button or Start Button to return to the Menu mode without
clearing the data.
Also, note that the game setting contents are not affected by
BACKUP DATA CLEAR operation.