For security you may wish to cut this note from your manual...
53
Operation
Select CHANGE PASSWORD using
the TV CH+/- buttons and then press
the VOL+ button.
●The Change Password screen will
appear. Choose any 4 digits for your
password and enter them. As soon as
the 4 digits are entered, the “CONFIRM
NEW PASSWORD” screen appears.
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●If you forget your password, the universal code is 2-4-8-6.