Xerox 6120 manual Solving Problems with Printing Quality 125

Symptom	Cause	Solution
Image defects.	The laser lens is dirty.	Clean the laser lens.
	A toner cartridge may	Remove the toner cartridges and
	be leaking.	check for damage. If it is damaged,
		replace it.
	A toner cartridge may	Remove the toner cartridge with the
	be defective.	color causing the abnormal image.
		Replace it with a new toner cartridge.
	The imaging unit may	Remove the imaging unit and check for
	be defective.	damage. If it is damaged, replace it.
Lateral lines or	The printer is not level.	Place the printer on a flat, hard, level
bands appear on		surface.
image.
	The media path is dirty	Print several sheets and the excess
	with toner.	toner should disappear.
	One or more of the	Remove the toner cartridges and
	toner cartridges may	check each for damage. If one or more
	be defective.	is damaged, replace it.
	The imaging unit is	Remove the imaging unit and check for
	defective.	damage. If it is damaged, replace it.
Colors look	One or more of the	Remove the toner cartridges and verify
drastically wrong.	toner cartridges may	that the toner is distributed evenly on
	be defective.	each cartridge roller, and reinstall the
		toner cartridges.
	One or more of the	Check the control panel for an X LOW
	toner cartridges may	or X EMPTY message. If necessary,
	be low or empty.	replace the specified toner cartridge.
Colors are not	The top cover is not	Make sure that the top cover is closed.
registering	properly closed.
properly; colors are
	The imaging unit is not	Remove the imaging unit and reinstall
mixed or have	correctly seated.	it.
page-to-page
	One or more of the	Remove the toner cartridges and
variation.
	toner cartridges may	check each for damage. If one or more
	be defective.	is damaged, replace it.
	The media is moist	Remove the moist media and replace it
	from humidity.	with new, dry media.

Solving Problems with Printing Quality 125