| 
             Cause  | 
          
             Solution  | 
          
             Reference  | 
        
|---|---|---|
| 
             If the intervals of lines or spots are approximately 94 mm (3.7 inches), the green tube of the image drum is damaged or dirty.  | 
          
             Lightly wipe the image drum with a soft tissue paper. Replace the image drum if it is damaged.  | 
          |
| 
             If the intervals of lines or spots are approximately 30 mm (1.2 inches), there may be foreign objects in the image drum.  | 
          
             Open and close the output tray, and then print again.  | 
          |
| 
             The image drum has been exposed to light.  | 
          
             Place the image drum back into the machine, and then do not use for a few hours. If the problem persists, replace the image drum.  | 
          

