Brother MFC 4300 owner manual White, Example of Regular, Blurred, Ghost Images

DIFFICULTY				SUGGESTIONS
			Print Quality Difficulties (CONTINUED)
The whole page is				Wipe the electric terminals referring to pages 15-
printed black.				24. Also, do not use heat-sensitive paper as it will
				cause this problem. After cleaning, if the printed
				pages are still black and the display shows
				CHANGE DRUM SOON, replace the drum unit
				with a new one.
		Black Page
Nothing is printed on				Make sure that the toner cartridge is not empty.
the page.				Wipe the electric terminals. (See Routine
				Maintenance, page 15-23,Cleaning the Printer, page
				15-24and Cleaning the Drum Unit, page 15-25.)
				Make sure that a torn piece of paper does not
				remain on the scanner window.
		White page
Printed pages are				Markings may disappear by themselves. Try copying
marked at regular				multiple pages to clear this problem. Markings may
intervals.				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 the drum was marked or damaged by
Example of Regular				excessive exposure to light. In this case, replace the
		Marking		drum unit with a new one.
Printed pages are				Certain environmental conditions such as humidity,
blurred at the center or				high temperatures, etc. may cause this condition to
at either edge.				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 page by wiping the
				scanner windows with a clean soft cloth. (See
	Blurred Page			Routine Maintenance, page 15-23,Cleaning the
				Printer, page 15-24and Cleaning the Drum Unit,
				page 15-25.) 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
the printed page.				Density function, pages 5-5.Make sure you use
				paper that meets the specifications. Rough surfaces
				or thick media can cause a ghost image.
	Ghost Images

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

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