Brother MFC-6800 Owner's Manual page 192

DIFFICULTY
Printed pages are curled. Thin Paper (17lb-18.4lb) can cause this problem. Make
Printed pages are
smeared.
Printouts are too dark or
too light.
Printed pages contain
white stripes.
White Stripes or
Faint lmages
Printed pages are stained
with toner or have vertical
stripes.
Dark Stripes or
Toner Stains
Printed pages have white in
black text and graphic areas.
White Spots
Toner scatters and stains
the printed page.
Scattering Toner
20 - 13
T R O U B L E S H O O T I N G A N D R O U T I N E M A I N T E N A N C E
SUGGESTIONS
Print Quality Difficulties
sure you select the Paper Type that suits the paper in
your multi-purpose sheet feeder. (See
page 11-7 and 11-9 and
Rough surfaces or thick media can cause "smeared
pages"—OR—"the toner to smear". Make sure you
select the correct Paper Type that suits the paper in your
multi-purpose sheet feeder. (See
7 and 11-9 and
Media Type,
Adjust the print conditions by setting the Print Density
light function. It has been factory set to the middle
position. (See
Setting the Print Density,
You may fix this by wiping the scanner windows
with a clean soft cloth.
(See
Cleaning the Scanner,
Replacing the Drum Unit,
If you still see white stripes or faint images and the
LCD shows CHANGE DRUM
the drum unit with a new one.
Clean the MFC's interior and the primary corona
wire of the toner cartridge. (See
page 20-17 and
Maintenance,
page 20-19.) Make sure that the tab of the
Unit,
corona wire is at the home position. If after
cleaning, you still see dark stripes or toner stains
and the LCD shows
replace the drum unit with a new one.
Make sure that you use paper that meets the
specifications. Rough surface or thick media can
cause the problem. If you still see white spots and
the LCD shows CHANGE DRUM
replace the drum unit with a new one.
Adjust the print conditions by setting the Print Density
function. Remove the drum unit and clean the
MFC's interior. (See
17,
Cleaning the Printer,
page 20-19.) Make sure that you use paper
Drum Unit,
that meets specifications. (See page 2-7.) If you still
have scattered toner and the LCD shows
DRUM SOON, replace the drum unit with a new one.
Paper Type,
page 13-4.)
Media Type,
Paper Type,
page 13-4.)
page 5-4.)
page 20-17 and
page 20-24.)
SOON, replace
Routine
Cleaning the Drum
CHANGE DRUM
SOON,
Routine Maintenance,
page 20-18 and
Cleaning the
CHANGE
page 11-
SOON,
page 20-