Brother MFC7650MC - Manual (Page 207)

1 I V w i s v - I I I W
Print Quality Difficulties
NOTICE
If the display Sho-ws CHANGE DRUM SOON, you can clear a print quality
problem by replacing the drum unit with a new one. The old drum unit is
at the end of its life.
Printouts are too dark
or Ught.
Adjust the print conditions by setting the Print Density function,
or turn the print density dial counterclockwise for lighter
images and clockwise for darker images. It has been factory set
to the middle position. See "The Print is too Light or too Dark”on
page 186.
Printed pages contain
white stripes. You may fix this by wiping the scanner windows with a clean soft
cloth. (See “Regular Maintenance” and “Cleaning the Drum
Unit” on pages 165-167.)
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
Images
Printed pages are
stained with toner or
have vertical stripes.
• Clean the MFC’s interior and the primary corona wire of the
toner cartridge. See “Regular Maintenance” and “Cleaning
the Drum Unit” on pages 166-167.
• Make sure that the tab of the corona wire is at the home
position.
If after cleaning, you stiU see dark stripes or toner stains and the
display shows CHANGE DRUM SOON, replace the drum unit
with a new one.
Dark Stripes or Toner
Stains
Printed pages have
white spots in black
text and graphicD area.
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 display shows CHANGE
DRUM SOON, replace the drum unit with a new one.
White Spots
195