Brother INTELLIFAX 3650 - Manual (Page 123)

TROUBLESHOOTING
TROUBLESHOOTING AND REGULAR MAINTENANCE
Print Quality Difficulties
NOTICE
If the display shows CHANGE DRUM, you can clear a print quality problem by
replacing the drum unit with a new one. The old drum is at the end of its life.
DIFFICULTY
Printed pages are too dark
or too light.
SUGGESTIONS
Adjust the print conditions by settingthe 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 113.
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 119-120.)
If you still see white stripes or faint images and the display
shows CHANGE DRUM, 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 machine interior and the primary corona wire of
the toner cartridge, See “Regular Maintenance” and “Cleaning
the Drum Unit” on pages 119-120.
• Make sure that the tab of the corona wire is at the home
position.
If you still see dark stripes or toner stains after cleaning and the
display shows CHANGE DRUM, replace the drum unit with a
new one.
Dark Stripes or Toner Stains
Printed pages have white
spots in black text and
graphics 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, replace the drum unit with a new one.
White Spots
115