Brother 7550MC, 6550MC warranty 16-16

MFC 4550/6550MC/7550MC

OP-US-5.0

TROUBLESHOOTINGPROCEDURES

Question	Recommendation
Tonerscattersandstains	Iftonerscatteredoverthewholeprintingsurface,adjustthe
theprintedpage.	printdensitydialinsidetheprintercounterclockwise.See“The
	PrintistooLightortooDark”onpage16-6.
	Clean the machine interior. See “Regular Maintenance” and
	“Cleaning the Drum Unit” on page 14-2.
	MakesurethatyouusepaperthatmeetsspecificationsSeepage
	10-1.
	If you still have the same problem and the display shows
Scattering Toner	CHANGE DRUM, replace the drum unit with a new one.
The whole page is	Wipetheelectricterminalsreferringtopage14-2.Also,donot
printedinblack.	useheat-sensitivepaperasitwillcausethisproblem.
	If the same problem occurs and the display shows CHANGE
	DRUM, on after cleaning, replace the drum unit with a new one.

Black Page
Nothingisprintedonthe	• Make sure that the toner cartridge is not empty.
page.	• Wipetheelectricterminalsreferringto“RegularMaintenance”
	and “Cleaning the Drum Unit” on page 14-1~3.
	• Make sure that a torn piece of paper does not remain on the
	scanner window.

White page
Printed	pages are		The problem may disappear by itself. Try copying multiple
marked	at	regular	pages to clear this problem. This may occur if the machine has
intervals.			not been used for a long time.
			Thisalsomayoccurifthesurfaceofthedrumisscratched.You
			must then replace the drum unit with a new one.
			If the problem does not disappear, it may be that the drum was
			markedordamagedbyexcessiveexposuretolight.Inthiscase,
Example	of	Regular	replace the drum unit with a new one.
Marking

Maintenance

16-16