Brother MFC 9840CDW - Manual (Page 164)

Printing and Faxing
157
8
For Mac OS
®
X 10.2.x to 10.4.x
c
Choose Send Fax from the pop-up menu.
d
Choose Facsimile from the Output pop-up menu.
e
Enter a fax number in the Input Fax Number box, and then click Print to send the fax.