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1. Cleaning the Raster Optical Scanner (ROS) Window

This article provides information on "How to Clean the Raster Optical Scanner (ROS) Window on the C2665dnf Dell Laser Printer"

1. Cleaning the Raster Optical Scanner (ROS) Window

To prevent deterioration of printing quality due to stains inside the printer, clean inside the printer regularly by using the cleaning rod whenever you replace drum cartridges.

1. Open the right side cover.
   
   
2. Turn the waste toner box lock lever 90-degrees counterclockwise to unlock the waste toner box.
   
   
3. Grasp the handle on the waste toner box and pull it out making sure to hold it upright so that the waste toner does not spill out.
   
   
   Caution: Take care not to drop the waste toner box while you are removing it.
   After removing the waste toner box, do not touch the parts shown in the illustration. Toner can dirty or stain your hands.
   
   
   
4. Stand and removed waste toner box upright on a level surface.
   
   
   WARNING: Never lay the waste toner box on its side as this may cause its malfunction or toner spills.
   
   
   
5. Remove the cleaning rod from inside the printer.
   
   
6. Insert the cleaning rod fully into one of the four holes until it clicks into the interior of the printer as illustrated below; and then pull it out.
   
   
7. Repeat step 6 also on the other three holes. One time insertion is enough for each hole.
8. Return the cleaning rod to its original location.
   
   
9. Reinsert the removed waste toner box.
   
   
10. Turn the waste toner box lock lever 90-degrees clockwise to lock the waste toner box.
    
    
11. Close the right side cover.
    

More info can be found in the C2665dnf User’s Guide.

If these steps do not correct the problem, please contact Dell Technical Support.