Brother FAX-4100 Owner's Manual page 119

DIFFICULTY
Toner scatters and stains
the printed page.
Scattering Toner
The whole page is
printed black.
Black Page
Nothing is printed on
the page.
White page
Printed pages are
marked at regular
intervals.
Example of Regular
Marks
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 (
Adjust the print conditions by setting the Print
Density setting. Remove the drum unit and clean
the machine's interior. (See
page 13-18,
Cleaning the Drum Unit,
that you use paper that meets specifications. (See
pages 2-6.) If you still have scattered toner and the
LCD shows
the drum unit with a new one.
Check the machine's environment. Conditions
such as humidity and high temperatures may cause
this print defect to occur.
Wipe the electric terminals referring to page 13-18.
Also, do not use heat-sensitive paper because it
will cause this problem. After cleaning, if the
printed pages are still black and the LCD shows
CHANGE DRUM
with a new one.
Make sure that the toner cartridge is not empty.
Wipe the electric terminals. (See
Maintenance,
13-18 and
Make sure that a torn piece of paper does not
remain on the scanner window.
Marks may disappear by themselves. Try copying
multiple pages to clear this problem. Marks may
occur if the machine 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 marks do not disappear, it may be
that the drum was marked or damaged by excessive
exposure to light. In this case, replace the drum unit
with a new one.
CONTINUED
Routine Maintenance
Cleaning the Printer,
page 13-19.) Make sure
CHANGE DRUM
SOON, replace the drum unit
page 13-18,
Cleaning the Printer,
Cleaning the Drum Unit,
)
,
page 13-18 and
SOON, replace
Routine
page
page 13-19.)
13 - 13