Panasonic PT-DS12KU 用户手册
Chapter 4 Settings — [SECURITY] menu
134 - ENGLISH
4) Press asqw to select [OK], and press the <ENTER> button.
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To cancel, select [CANCEL].
Attention
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The initial password is “AAAA” by the factory default or when [ALL USER DATA] in [INITIALIZE] (x page 124) is executed.
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Change the password periodically that is hard to guess.