Toshiba manual FC-22 Troubleshooting

(15) Color banding (at right angles to feeding direction)

Feeding direction

Cause/Defect area	Step	Check items	Measures
Main charger wire	1	Charger wire dirty or deformed?	Clean or replace charger wire.
Fuser roller	2	Fuser roller or oil roller dirty?	Clean them.
High-voltage transformer	3	High-voltage transformer output defective?	Check circuit and replace high-voltage transformer
(main charger/			if defective.
transfer roller)
Drum	4	Deep scratch on drum surface?	Replace drum if scratch has reached aluminum
			base.
	5	Fine scratches on drum surface (drum pit-	Check and adjust contact of cleaning blade and re-
		ting)?	covery blade.
Scattered toner recovery	6	Electrical continuity secured between de-	If not, replace developer bias supply spring.
roller of developer unit		veloper bias supply spring and recovery
		roller?
Scanner carriage section	7	Foreign matter on carriage rail?	Remove foreign matter.

January 2000 © TOSHIBA TEC 4 - 71 FC-22 TROUBLESHOOTING