Prohibiting PC Faxing
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 a screen for entering a PIN is displayed, enter the PIN with the numeric keys and tap <Apply>. Setting the System Manager PIN
4.
Tap <Off>.
<Off>Disables PC faxing.
<On>Enables PC faxing.