4.Place the duplex unit on top of the paper tray so that they are aligned flush, then open the small cover on the duplex unit and pull the blue handle gently until the duplex unit and paper tray are locked together.
5.Slide the duplex unit and paper tray as a complete unit back into the printer.
6.Connect the power cable and switch the printer on.
NOTE
The printer menu will automatically configure to include this option. However, you can also set it manually as follows:
•Press the MENU button until PRINT MENU is displayed, then press the SELECT button.
•Press the ITEM button until DUPLEX is displayed.
•Press the VALUE button until ON is displayed then press the SELECT button. An asterisk (*) appears to show that duplex has been set to on.
•Press the ONLINE button to turn the printer back on line.