Pioneer PDP-507XG Manual De Instrucciones página 39

Useful adjustment settings 09
We suggest you write down your password so you don't forget it.
If you forget the password
PDP-507XG / PDP-427XG
When the message "Please Input Your Password" is displayed,
Your password No.:
press the ENTER button on the remote control unit and hold it
down for 3 seconds or longer.
The password reverts to "1234".
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