Brother MFC-255CW - Manual (Page 39)

Security features
25
4
Turning TX Lock on/off
4
Turning TX Lock on
4
a
Press Menu, 2, 0, 1.
b
Press a or b to choose Set TX Lock.
Press OK.
c
Enter the registered 4-digit password.
Press OK.
The machine goes offline and the LCD
shows TX Lock Mode.
Turning TX Lock off
4
a
Press Menu.
b
Enter the registered 4-digit password.
Press OK.
TX Lock is automatically turned off.
Note
If you enter the wrong password, the LCD
shows Wrong Password and stays
offline. The machine will stay in TX Lock
mode until the registered password is
entered.