Cleaning the Interior
If streaks appear on printed paper or part of the image is missing, execute [Clean Device].
1
On the control panel, press [Menu] in the [Home] screen. [Home] Screen
2
Press [Adjustment/Maintenance] 
[Maintenance].
[Maintenance].3
Press [Clean Device].
4
Press [Start].
Cleaning starts. When a message appears notifying that cleaning is completed.