Prohibiting PC Faxing 
(MF419x / MF416dw)
You can prohibit users from PC faxing (faxing from a computer).
1
Tap <Menu> in the Home screen.
2
Tap <Fax Settings>.
3
Select <TX Function Settings> 
<Allow Fax Driver TX>.
<Allow Fax Driver TX>.If the logon screen appears, enter the correct ID and PIN using the numeric keys, and then press 
. Logging on to the Machine
. Logging on to the Machine4
Tap <Off>.
<Off>Disables PC faxing.
<On>Enables PC faxing.