B710 B720 B730 User’s Guide > 129Cleaning the Printer’s InteriorWARNINGBe sure to switch off and unplug the printer before accessingthe interior of the printer for cleaning, maintenance, or faultclearance. Access to a live printer’s interior can cause electricshock.After clearing paper jams or replacing the drum/toner cartridge,inspect the inside of the printer before closing cover A.WARNING• Never touch a labelled area found on or near the heat roller.You can get burned.• If a sheet of paper is wrapped around the heat roller, do nottry to remove it by yourself. To avoid injuries or burns,switch off the printer immediately, and contact service.• Remove any remaining pieces of paper.• Remove any dust or stains with a clean dry cloth.Cleaning the Feed RollersIf you start to encounter difficulties with paper feed, you shouldclean the feed rollers. Generally, this should be done about every100,000 impressions, but may need to be done more often if youare using paper which gives off a lot of paper dust.
