0KCF-0C7
When the drum unit inside the machine becomes dirty, print quality may deteriorate. If this happens, follow the procedure below to clean the drum unit. Note that you cannot clean the drum unit when the machine has documents waiting to be printed.
1
Press 
.
.2
Use 
/
to select <Adjustment/Maintenance>, and press 
.
/ to select <Adjustment/Maintenance>, and press .3
Select <Clean Drum Unit>, and press .
.4
Press .
.
Cleaning starts. When the <Finished.> message is displayed approximately 1 minute later, press to return to the main screen.
to return to the main screen.