Why do dark lines appear in my prints when I use the ADF?

• Dust may be collected on the glass and on some parts in the ADF. Follow these steps to remove the dust:
  1. Open the document cover.
  2. Use a lint free cloth to clean the document table glass.
  3. Clean the white plastic paper guide and the document pad under the document cover.
     
  4. Remove the edge of the white plastic paper guide from the slot on the right and clean underneath it.
     
  5. Reinsert the plastic paper guide into the slot. Be sure to insert it into the correct position.
     
  6. Close the document cover.