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Clean the Drum Unit

If your printout has dots or other repeating marks at 94 mm intervals, the drum may have foreign material, such as glue from a label, stuck on the drum surface.

  1. Make sure the machine is in Ready mode.
  2. Press Menu.
  3. Press image or image to display the [Print Reports] option, and then press OK.
  4. Press image or image to select the [Drum Dot Print] option, and then press OK.
  5. Press Start.
    The machine prints the Drum Dot Check Sheet.
  6. Press Stop/Exit.
  7. Press and hold image to turn the machine off.
  8. Open the front cover.
    image
  9. Remove the toner cartridge and drum unit assembly from the machine.
    image
  10. Turn the drum unit as shown in the illustration. Make sure that the drum unit gear is on the left side.
    image
  11. Use the numbered markers next to the drum roller to find the mark on the drum. For example, a dot in column 2 on the check sheet means that there is a mark in drum region “2”.
    image
  12. Rotate the wheel at the end of the drum unit while pushing the shaded part, as shown in the illustration, to find the mark or foreign material.
    image
    IMPORTANT
    • To avoid print quality problems, DO NOT touch the surface of the drum unit, only the wheel on the end.
  13. Wipe the drum unit surface gently with a dry cotton swab until the mark or foreign material on the surface comes off.
    image
    NOTE
    DO NOT clean the surface of the photosensitive drum with a sharp object or any liquids.
  14. Reinsert the toner cartridge and drum unit assembly back into the machine.
    image
  15. Close the front cover of the machine.
  16. Press image to turn the machine on.
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