HP LaserJet 4610n - Manual (Page 129)

2. Pull down the front cover and transfer unit.
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 printer.
4. Remove the new print cartridge from the bag. Place the used print cartridge in the bag
for recycling.
ENWW Changing print cartridges 117