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126
C H A P T E R S I X T E E N
DIFFICULTY
Printed pages contain white You may fix this by wiping the scanner windows with a
stripes.
White Stripes or
Faint lmages
Printed pages are stained
with toner or have vertical
stripes.
Dark Stripes or Toner Stains
Printed pages have white
spots in black text and
graphic areas.
White Spots
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
regular intervals.
Example of Regular Marking
SUGGESTIONS
clean soft cloth. (See "Regular Maintenance" and "Cleaning
the Drum Unit" in this chapter.) If you still see white stripes
or faint images and the display shows CHANGE DRUM
SOON, replace the drum unit with a new one.
Clean the machine's interior and the primary corona wire of
toner cartridge. See "Regular Maintenance" and "Cleaning
the Drum Unit" in this chapter. 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.
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.
Adjust the print conditions by setting the Print Density
function. Clean 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. 15. If you still have scattered
toner and the display shows CHANGE DRUM SOON,
replace the drum unit with a new one.
Wipe the electric terminals. 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.
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.
Markings may disappear by themselves. Try copying at
multiple pages 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.
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