Brother MFC-665CW User Manual page 51

Security features
Note ........................................................................................
If there is a power failure the data will stay
in memory for approximately 24 hours.
Turning off the memory security
@
@
Press Menu.
Enter the registered 4-digit password.
Press OK.
Memory Security is automatically turned
off,
Note
If you enter the wrong password, the LCD
shows Wrong Password and stays
offline. The machine will stay in Secure
mode until the registered password is
entered.
3s