Panasonic PT-RZ11K Operating Instructions Manual page 155

4) Press asqw to select [OK], and press the <ENTER> button.
f To cancel, select [CANCEL].
Attention
f The initial password is "AAAA" by the factory default or when [ALL USER DATA] in [INITIALIZE] (x page 144) is executed.
f Change the password periodically that is hard to guess.
Chapter 4 Settings — [SECURITY] menu
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