Laser Multifunction Printer Owner's Manual

61
TROUBLESHOOTING AND MAINTENANCE
DIFFICULTY SUGGESTIONS
Printed pages have white spots in Make sure that you use paper that meets the specifications. Rough
black text and graphic areas. 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. Check the machine’s environment; conditions such as
high humidity may cause this situation to occur.
Toner scatters and stains the printed Adjust the print conditions by setting the Print Density function. Clean
page. the machine’s interior. See “Regular Maintenance” and “Cleaning the
Drum Unit” in this chapter. Make sure that you use paper that meets
specifications. See chap. 5. If you still have scattered toner and the
display shows CHANGE DRUM SOON, replace the drum unit with a
new one. Check the machine’s environment; high temperature and high
humidity conditions may cause this condition to occur.
The whole page is printed black. Clean the machine’s interior and the primary corona wire of the drum
unit. Also, do not use heat-sensitive paper as it will cause this problem.
After cleaning, if the printed pages are still black or the display shows
CHANGE DRUM SOON, replace the drum unit with a new one. The
drum unit may be damaged.
Nothing is printed on the page. Make sure that the toner cartridge is not empty. Wipe the electric
terminals referring to “Regular Maintenance” and “Cleaning the Drum
Unit” in this chapter. Make sure that a torn piece of paper does not
remain on the scanner window.
Printed pages are marked regular Markings may disappear by themselves. Try copying at multiple pages
intervals. to clear this problem. Markings may occur if the machine has not been
used for a long time. A possible cause is that the surface of the drum is
marked or damaged by excessive exposure to light. In this case, replace
the drum unit with a new one.
Printed pages are blurred at the center Certain environmental conditions such as humidity, high temperatures,
or at either edge. etc. may cause this condition to occur. Make sure the machine is placed
on a flat, horizontal surface. Remove the drum unit with the toner
cartridge installed. Try rocking them from side to side. You may clear a
blurred page by wiping the scanner windows with a clean soft cloth. (See
“Regular Maintenance” and “Cleaning the Drum Unit” in this chapter.) If
a blurred page occurs after cleaning and the display shows CHANGE
DRUM SOON, replace the drum unit with a new one.
Ghost images appear on printed page. Adjust the print conditions by setting the Print Density function. Make
sure that you use paper that meets the specifications. Rough surfaces or
thick media can cause a ghost image. Make sure that you select the
appropriate media type in the printer driver.
The drum unit is a consumable and it is necessary to replace it
periodically, to maintain good printing quality.
White page
Example of Regular Marking
Ghost Images
Blurred Page
Scattering Toner
Black Page
White Spots