Brother MFC4550 PLUS - Manual (Page 184)

Difficulty
Toner scatters and stains
the printed page.
Scattering Toner
Suggestions______ _____________ _____________ ______
If toner scattered over the whole printing surface, adjust the
print density dial inside the printer counterclockwise. See “The
Print is too Light or too Dark” on page 162.
Clean the MFC’s interior. See “Regular Maintenance” and
“Cleaning the Drum Unit” on pages 141-143,
Make sure that you use paper that meets specifications. See
page 107.
If you still have scattered toner and the display shows CHANGE
DRUM, replace the drum unit with a new one.
The whole page is
printed in black. Wipe the electric terminals referring to page 142. 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, replace the drum unit with a new one.
Black Page
Nothingis printed on the
page.
~...
• Make sure that the toner cartridge is not empty.
• Wipe the electric terminals referring to “Regular Mamtenance”
and “Cleaning the Drum Unit” on pages 141-143.
• Make sure that a torn piece of paper does not remain on the
scanner window.
White page
Printed pages arc
marked at regular
intervals.
Example of Regular
Marking
The markings may disappear by themselves. Try copying 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 the drum was
marked or damaged by excessive exposure to light. In this case,
replace the diiun unit with a new one.
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