In order to correct this problem, try the following:

• Uninstall the printer driver packages for the printers on your system that you do not use. Macintosh OS X comes pre-installed with other packages. In most cases these drivers are not needed, and can sometimes cause conflicts. In order to remove the printer drivers, you will need to begin by opening the hard drive that contains the OS® X system software or the Root folder. Normally, double-clicking on the Macintosh Hard Drive icon will open automatically to the Root folder.

1. Double-click on the Library folder.
   
2. Double-click on the Printers folder.
   
3. Select and delete the folders just for other manufactures not in use.
   (such as Epson, Canon, Lexmark and HP.)

4. Empty the trash.
   
   The other software is removed from the system. You should re-start the computer, and then re-select the Brother unit from the "Print & Fax" or "Print & Scan" Utility, and try printing.

• Check the USB connection.

1. Disconnect the cable from the computer and the Brother machine.
   Connect the end of the USB cable directly to the Mac CPU. Connect the other end of the USB cable directly to the Brother machine.
   
   
2. Restart the computer.
   (Click on the Apple Menu and choose Restart.)
   
   
3. Click on the Apple Menu and choose System Preferences.
   
   
4. Click on the Print & Fax or Print & Scan icon.
   
   
5. Click on + button.
   
   
6. Click on Default. Choose your Brother machine and confirm that the correct machine is listed for Print using. And click on Add button.
   
   At this point, you should see your model listed in the main body of the "Print & Fax" or "Print & Scan" Utility window. The driver is now selected and active on the system. You can exit the "Print & Fax" or "Print & Scan" Utility.