Dell B1265dnf Mono Laser Printer MFP - Manual (Page 110)

110 1. Software Installation
Reinstallation for Macintosh
If the printer driver does not work properly, uninstall the driver and reinstall it.
1 Make sure that the machine is connected to your computer and
powered on.
2 Insert the supplied software CD into your CD-ROM drive.
3 Double-click the CD-ROM icon that appears on your Macintosh desktop.
4 Double-click the MAC_Installer folder > Uninstaller OS X icon.
5 Enter the password and click OK.
6 When the uninstall is done, click OK.
If a machine has already been added, delete it from the Print Setup Utility
or Print & Fax.