Brother FAX 2750 Owner's Manual page 111

DIFFICULTY
Copy Quality
Vertical streaks appear in
Difficulties
copies.
Print Quality
Printouts are too dark or
Difficulties
too light.
(Print Operations
are Available with
Printed pages contain white
Software Option)
stripes.
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.
Toner scatters and stains
the printed page.
The whole page is printed
black.
Nothing is printed on the
page.
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
SUGGESTIONS
Sometimes you may see vertical streaks on your copies.
Either the scanner or the primary corona wire for printing
is dirty. Clean them both. (See pages 109 and 111.)
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" on page 37.
You may fix this by wiping the scanner windows with a
clean soft cloth. (See "Cleaning the Document Scanner" on p. 109
and "Cleaning the Drum Unit" on page 111.) If you still see
white stripes or faint images and the display shows CHANGE
DRUM SOON, replace the drum unit with a new one.
White Stripes or
Faint lmages
Clean the fax machine's interior and the primary corona wire of the
toner cartridge. See "Regular Maintenance" and "Cleaning
the Drum Unit" on pages 109–111. Make sure that the tab
of the corona wire is at the home position. If after cleaning,
you still see dark stripes or toner stains and the display shows
CHANGE DRUM SOON, replace the drum unit with a new one.
Make sure that you use paper that meets the specifications. spots
Rough surface or thick media can cause the problem. If you
still see white spots and the display shows CHANGE
DRUM SOON, replace the drum unit with a new one.
White Spots
Adjust the print conditions by setting the Print Density
function. Remove the drum unit and clean the fax machine's
interior. See "Regular Maintenance", "Cleaning the Printer" and
"Cleaning the Drum Unit" on pages 109–111. Make sure that you
use paper that meets specifications. See page 16. If you still have
scattered toner and the display shows CHANGE DRUM SOON,
Scattering Toner
replace the drum unit with a new one.
Wipe the electric terminals referring to page 110. 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
Make sure that the toner cartridge is not empty. Wipe the
electric terminals referring to "Regular Maintenance", "Cleaning
the Printer" and "Cleaning the Drum Unit" on pages 109–111.
Make sure that a torn piece of paper does not remain on the
scanner window.
White page
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