Maintenance
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4
C Select [Maintenance] using {U} or {T}, and then press the {OK} key.
D Select [Menu Protect], and then press the {OK} key.
E Enter an Administrator Code using the number keys, and then press the
{OK} key.
F Select a menu protect level, and then press the {OK} key.
G Press the {User Tools/Counter} key.
Reference
p.4 “Accessing User Tools”