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2 Slide the cover down, and then turn each screw clockwise to tighten.
Installing optional trays
The printer supports up to four optional input sources: an optional 550-sheet tray, an optional 2,000-sheet tray, and
an optional 550-sheet specialty media tray. Follow these instructions to install any of the input sources.
Note: The X734de, X736de, and X738de model printers will support a total of four optional input sources. When
using a 2000-sheet tray, only one additional 550-sheet input option may be installed.
CAUTION—POTENTIAL INJURY: The printer weight is greater than 18 kg (40 lb) and requires two or more
trained personnel to lift it safely.
CAUTION—SHOCK HAZARD: If you are installing an optional tray after setting up the printer, then turn the
printer off and unplug the power cord, the USB cable, and the Ethernet cable before continuing.
CAUTION—TIPPING HAZARD: Floor-mounted configurations require additional furniture for stability. You
must use either a printer stand or printer base if you are using a high-capacity input tray, a duplex unit and an
input option, or more than one input option. If you purchased a multifunction printer (MFP) that scans, copies,
and faxes, you may need additional furniture. For more information, see
www.lexmark.com/multifunctionprinters.
1 Unpack the optional tray, and then remove all packing material.
Additional printer setup
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