Ricoh Aficio SP 4310N Hardware Manual page 160

7. Maintaining the Printer
1. Open the front cover by pushing the front cover release button.
2. Lift the front side of the print cartridge, and then pull it out of the printer.
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3. Be sure to put the print cartridge on a stable, flat surface.
4. Wipe around the metallic registration roller by turning with a soft damp cloth.
5. Take the new print cartridge from the box.
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