White Spots Feeding direction | Toshiba e-Studio250, e-Studio200

(9) White Spots

Step	Cause/Defect area	Check items	Measures

1	Transfer charger unit	Foreign matter on guide roller?	Clean guide roller.

2		Guide roller shaft grounded	Ground guide roller shaft properly by apply-
		improperly?	ing conductive oil.

3		Transfer charger wire slacked?	Replace transfer charger unit.

4		Transfer charger case deformed?	Replace transfer charger unit.

5	Process unit (drum)	Any abnormalities on drum sur-	Replace process unit or drum.
		face?

6	Fuser unit	Toner on heat roller surface?	Clean heat roller. If problem persists, replace
		Scratches on heat roller surface?	heat roller.

7	Process unit (Developer)	Is toner running short?	Check to see toner sensor works properly, and
			then check toner replenishing procedure.

8	HVPS (main charger/	High-voltage output defective?	Adjust output from HVPS, or replace defec-
	developer bias/transfer		tive HVPS.
	charger)

9		If problem persists after measures	Replace process unit, transfer unit, fuser unit,
		are applied, or there is no prob-	or HVPS.
		lem found in above check, follow
		procedure described in right col-
		umn.

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e-STUDIO160/200/250 TROUBLESHOOTING