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Difficulty
Print
Printouts are too dark
or light.
Quality
Difficulties
Printed pages contain
white stripes.
White Stripes or
Printed pages are
stained corona with
toner or have vertical
stripes.
Dark Stripes or
Printed pages have
white spots in black
text and graphic areas. cause the problem. If you still see white spots
Toner scatters and
stains the printed
page.
Scattering Toner
The whole page is
printed black.
22 - 12
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
Adjust the print conditions by setting the Print
Density function. It has been factory set to the
middle position. (See Setting the Print
Density, on page 5-4.)
You may fix this by wiping the scanner windows
with a clean soft cloth. (See Routine
Maintenance and Cleaning the Drum Unit,
on pages 22-17 and 22-19.) If you still see
white stripes or faint images and the display
shows CHANGE DRUM SOON, replace the
drum unit with a new one. Check the machine's
environment. Conditions such as humidity, high
Faint lmages
temperatures, etc. may cause this print defect to
occur.
Clean the machine's interior and the primary
wire of the drum unit. (See Routine Maintenance
and Cleaning the Drum Unit, on pages 22-17
and 22-19.) 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.
Toner Stains
Make sure that you use paper that meets the
specifications. Rough surface or thick media can
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.
White Spots
Adjust the print conditions by setting the Print
Density function. Remove the drum unit and
clean the machine's interior. (See Routine
Maintenance, Cleaning the Printer and
Cleaning the Drum Unit, on pages 22-17 and
22-19.) Make sure that you use paper that
meets specifications. (See page 2-6.) 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 may cause this condition to occur.
Clean the machine's interior and the primary
corona wire of the drum unit. (See page 22-19.)
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
Black Page
with a new one. The drum unit may be damaged.
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