Kyocera FS-6025 is multifunction machine. It has ability to work as copier, scanner, printer and fax. Like other digital copiers its split glass should be cleaned regularly otherwise black lines start to appear on the print. To prevent this issue the machine automatically detects dirty slit glass and displays a message “Clean the slit glass”. In case you want to disable this function follow these steps:
Enter the service mode (Enter 1087- 1087 on the keypad).
U000 will blink.
Go to U326 (Setting the black line cleaning indication) and set it to off.