Spots are printed 75mm (2.95 in.) apart down the page.

First try printing a few pages to try and clean the drum unit. If the problem is not solved after printing a few pages, the drum unit may have glue from a label stuck on the drum surface.

Follow the steps below to perform additional cleaning of the drum unit.

1. Clean the drum unit in Drum Cleaning mode.
   
   
   1. Open the MP tray and lower it gently.
   2. Pull out the MP tray support and unfold the flap.
      
      
      
      
   3. Put a blank sheet of paper in the MP tray.
   4. Press the Cancel button once.
      If the printer starts warming up, wait until it stops and then go on to the step e.
   5. Press the Cancel button first and then press the Back button.
      Keep the Cancel and Back buttons pressed down until "DRUM CLEANING" is displayed on the LCD.
   6. Press the Go button.
      The paper will feed into the printer to start the drum cleaning.
   7. When "DRUM CLEANING / COMPLETED" is displayed on the LCD, press the Cancel button.
   8. Try to print again.
      If this problem still remains, repeat steps a- g several times.
      
      

      We recommend this cleaning operation once a month to keep the best quality.

      
       
      
2. Pull the drum unit out from the printer and clean it. See "How do I clean the drum unit?".
   If the problem is not solved after doing step 2, repeat step 1 again.
   
   
3. If this problem is not solved after doing steps 1 and 2, the drum unit may be damaged.
   Replace the drum unit with a new one. See "How do I replace the drum unit?".