Toshiba e-STUDIO500P manual Print quality-light print, Print quality-toner on backside of printed

Print quality—light print

Service tip: Check the toner saver and print darkness settings first if the print is light.

	FRU	Action
1	Transfer roll	Check the right end of the transfer roll shaft for signs of wear or
		contamination. If incorrect, replace the transfer roll.
2	Right side transfer roll arm	Check the right side transfer roll arm assembly bearing for wear or
	assembly	contamination. Also make sure the transfer cable is firmly attached to
	HVPS	the bearing. If incorrect, replace the right side transfer arm assembly.
		Check the connection of the transfer roll assembly cable to the
		transformer on the HVPS board. Check the continuity of the cable
		from the bearing to the spade terminal on the cable. If incorrect,
		replace the right side transfer arm assembly. If correct, replace the
		HVPS.
3	Printhead	A contaminated printhead may be the cause of light print. If no other
		cause is found, install a new printhead.

Print quality—toner on backside of printed page

Service tip: This is generally caused by loose toner in the machine in the paper path being carried through the printer on the backside of the paper.

	FRU	Action
1	Hot roll fuser assembly	Toner is being carried out on the backside of the media. This problem
		is generally caused by a toner buildup on the fuser hot roll or backup
		roll. Check the fuser hot roll and backup roll for any noticeable
		buildup of toner. Repair as necessary.
2	Transfer roll transfer plate	Check the transfer roll for toner buildup or loose toner around the
	assembly	area of the transfer plate assembly. Clean the area and run another
		copy. If the problem continues, replace the FRUs in the following
		order:
		• HVPS
		• System board

Diagnostic information 2-121