When you replace the drum unit with a new one, you need to reset the drum counter by completing the following steps:
- Turn the printer power switch back on.
- Press the + or - button to choose "Machine Info".
- Press OK to proceed to the next menu level, and then press the + or - button to choose "Reset Parts Life".
- Press OK, and then press the + button to choose "Belt Unit".
- Press OK two times.
Drum Reset Completed.