Hello, please follow the steps below:
1. Place a regular A4 sheet of paper in the manual feeder.
2. Press the (Menu/OK) key to enter the menu.
3. Press the (Left/Right Arrow) key to find [System Setup].
4. Press the (Menu/OK) key to enter [System Setup], then press the (Left/Right Arrow) key to find [Cleaning Mode], and press the (Menu/OK) key to enter [Cleaning Mode].
5. Press the (Menu/OK) key to start cleaning. Wait for 2-3 minutes. Cleaning is complete when the paper is ejected.