HP Color LaserJet 4730 Multifunction Printer series - Manual (Page 244)

2. Grasp the green handle on the transfer unit and pull down to open it.
CAUTION Do not place any item on the transfer unit while it is open. If the transfer unit is
punctured, print quality problems may result.
3. Remove the used print cartridge from the MFP.
4. Remove the new print cartridge from the bag. Place the used print cartridge in the bag for recycling.
224 Chapter 11 Managing and maintaining the MFP ENWW