Security, Tx lock (mfc-7420 only), Setting up the password – Brother MFC-7820N User Manual
Page 40: Changing the tx lock password, Security -7 tx lock (mfc-7420 only) -7
 
Chapter 2
2 - 7
Security
You can set up your MFC with multiple levels 
of security using TX Lock (MFC-7420 only), 
Memory Security (MFC-7820N only) and 
Setting Lock.
TX Lock (MFC-7420 only)
TX Lock lets you prevent unauthorized 
access to the MFC. You will not be able to 
continue to schedule Delayed Faxes or 
Polling jobs. However, any pre-scheduled 
Delayed Faxes will be sent even if you turn on 
TX Lock, so they won’t be lost.
While TX Lock is on, the following operations 
are available:
■
Receiving faxes
■
Fax Forwarding 
(if Fax Forwarding was already on) 
■
Paging
(if Paging was already on)
■
Remote Retrieval 
(if Fax Storage was already on)
■
PC Fax Receive
(if PC Fax Receive was already on)
While TX Lock is on, the following operations 
are NOT available:
■
Sending faxes
■
Copying
■
PC printing
■
PC scanning
Note
To print the faxes in memory, turn off TX 
Lock.
Setting up the password
Note
■
If you have already set the password, you 
will not need to set it, again.
■
If you forget the TX Lock password, 
please call Brother Customer Service. 
(See Brother numbers on page i.)
1
Press Menu/Set, 1, 8, 1.
2
Enter a four-digit number for the 
password.
Press Menu/Set.
If you are entering the password for the 
first time, the LCD shows Verify:.
3
Re-enter the password.
Press Menu/Set.
4
Press Stop/Exit.
Changing the TX Lock password
1
Press Menu/Set, 1, 8, 1.
2
Press
▲ or ▼ to select Set Password.
Press Menu/Set.
3
Enter the registered four-digit password.
Press Menu/Set.
4
Enter a four-digit number for the new 
password.
Press Menu/Set.
5
If the LCD shows Verify:, re-enter the 
new password.
Press Menu/Set.
6
Press Stop/Exit.
Security
1.TX Lock