Brother MFC 4350 manual 205

T R O U B L E S H O O T I N G A N D M A I N T E N A N C E 205

DIFFICULTY	SUGGESTIONS
Printed pages are marked	Markings may disappear by themselves. Try copying
at regular intervals	multiple pages to clear this problem. Markings may
	occur if the MFC has not been used for a long time. A
	possible cause is that the surface of the drum is
	scratched. You must then replace the drum unit with a
	new one. If the markings do not disappear, it may be that
Example of Regular Marking	the drum was marked or damaged by excessive exposure to
	light. In this case, replace the drum unit with a new one.
Printed pages are blurred at	Certain environmental conditions such as humidity, high
the center or at either edge	temperatures, etc. may cause this condition to occur. Make
	sure the MFC is placed on a flat, horizontal surface.
	Remove the drum unit with the toner cartridge installed. Try
	rocking them from side to side. You may clear a blurred
Blurred Page	page by wiping the scanner windows with a clean soft cloth.
	(See “Regular Maintenance”, “Cleaning the Printer” and
	“Cleaning the Drum Unit” on pages 214 and 215.) If a
	blurred page occurs after cleaning and the display shows
	CHANGE DRUM SOON, replace the drum unit with a new
	one.
Ghost images appear on	Adjust the print conditions by setting the Print Density
printed page	function. Make sure that you use paper that meets the
	specifications. Rough surfaces or thick media can cause a
	ghost image.
Ghost Images

The drum unit is a consumable item and it is necessary to replace it periodically.