Toshiba FC-22 manual White banding in feeding direction directionFeeding

(11)White banding (in feeding direction) directionFeeding

Cause/Defect area	Step	Check items	Measures
Laser optical unit	1	Foreign matter or dust on slit glass?	Clean slit glass.
Main charger grid	2	Foreign matter on charger grid?	Remove foreign matter.
Developer unit	3	Foreign matter in developer unit?	Remove foreign matter.
	4	Foreign matter on drum seal?	Remove foreign matter.
	5	Drum seal of developer unit in proper con-	Modify position of drum seal or replace it.
		tact with drum?
Drum	6	Any abnormalities on drum surface?	Replace drum.
Transport path	7	Does toner image touch foreign matter af-	Remove foreign matter.
		ter transfer, before entering fuser unit?
Discharge LED array	8	Any lamp of discharge LED array gone out?	Replace discharge LED array.
Scanner	9	Foreign matter or dust in optical path?	Clean lens and mirrors.

January 2000 © TOSHIBA TEC 4 - 67 FC-22 TROUBLESHOOTING