Brother 1840C - Manual (Page 61)

3 - 19 SETUP SEND
Turning TX Lock on
1
Press Menu/Set , 2 , 0 , 1 .
2
Press ▲ or ▼ to select Set TX
Lock .
Press Menu/Set .
3
Enter the registered 4-digit password.
Press Menu/Set .
The machine goes offline and the LCD shows TX Lock Mode .
Turning TX Lock off
1
Press Menu/Set .
2
Enter the registered 4-digit password.
Press Menu/Set .
TX lock is automatically turned off.
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.
1.TX Lock