4Duplex Unit Installation GuideThank you for choosing this product.This guide explains how to install the duplex unit.To ensure the safe operation, be sure to read the Safety Notes section of the manual bundled with the printer.CAUTION• Switch off the machine before connecting the interface cable or optional product. Connecting the cable or optional product with a live machine can cause electric shock.Checking the Packaged ItemsThe following items can be found inside the packaging box. If there are any missing items, contact our Customer Support Center or your dealers.Procedure1.Press the power switch in the left side of this printer to the < > position to switch off the power.Next, unplug the power cord from the power outlet and printer.2.Open the cover E.Insert and push your fingers into the round holes at both sides of the cover E, then remove only the outside cover by sliding the cover up slightly.• Unit D• Connector cover• Label• This guide