Sony mhc-gzr99d Operating Instructions Manual page 97

Notes
 The highest score is reset when the system is
turned off.
 The "SCORE MODE" function may be
canceled when certain remote buttons are
pressed.
 In some cases, you may not be able to use the
scoring mode.
Tip
The "SCORE MODE" setting is automatically
changed to "BEGINNER 1" when the system
is turned off.
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