For the error code 638

  1. Press the front cover open button on the side of this machine, and then open the front cover toward you.

  2. Hold the toner cartridge, push it up a little, and then pull it out toward you. Remove the toner cartridge with the image drum attached.

    • Do not touch the blue lever on the toner cartridge.

    • Handle with adequate care since the green part of the image drum is very easy to be damaged.

    • Do not expose the image drum to direct sunlight or strong light (approx. 1,500 lux or above). Do not leave it uncovered for more than 5 minutes even under room lighting.

  3. Place the removed toner cartridge and image drum on a flat surface covered with newspaper or the like, and cover them with paper to avoid direct light.

  4. Lift the transparent cover.

  5. If the edge of the paper is not visible, pull the paper toward you by holding its left and right sides until you can see the edge of the paper.

  6. Once the edge of the paper is visible, slowly pull the paper up to remove it.

  7. Return the transparent guide back to its original position.

  8. Install the toner cartridge and the image drum from diagonally above by holding the toner cartridge.

  9. Check the [Installation position] by the right label on the toner cartridge, and press in the toner cartridge. Check that the triangular marks on the left and right sides of the image drum are all the way in.

  10. Close the front cover firmly with your both hands.