Placing the Printer on the Paper Tray Support Unit Use the following procedure to place the printer on the paper tray support unit when no
duplex unit is installed.   If a duplex unit is installed, see “Removing the 500-Sheet
Paper Tray Support Unit (No Duplex Unit)” on page  134. Attention:   Printer power should be off before performing this procedure. 1.   Facing the front of the printer, hold the printer by its corners, and set it on top of the support unit.   Make sure the printer is firmly seated on the support unit.   Also
make sure the corners of the printer are aligned with the corners of the support
unit. 2.   Snap the locking clips into the notches located at the back of the printer and the support unit. Chapter 7.   Installing Printer Options 127