When you replace the drum unit with a new one, you must reset the drum counter by completing the following steps:

1. Close the front cover.
2. Make sure the machine is turned on.
3. Press (Settings).

   If your machine displays the All Settings menu on the Home screen, skip the Settings menu.

4. Press All Settings. (This step might be skipped in some models.)
5. Choose Machine Info. or Machine Information => Parts Life.
6. Press and hold Drum or Drum Life until the machine's display message changes.
7. Press Yes.
8. Press (Home).