Table 2-77 Image defects table (continued)
Problem Sample Cause Solution
The front of the page is dirty.
The photosensitive drum is
dirty.
Replace the toner cartridges.
The fuser roller or pressure
roller is dirty.
Execute a Pressure roller clean
mode procedure. If the dirt does not
come off, replace the fuser.
NOTE: Cleaning the fuser with HP
tough paper provides better results
than with plain paper. You might
need to execute the cleaning
process several times to remove all
contaminants on the fuser.
Repetitive horizontal lines
appear.
See repetitive image defect ruler.
Clean the indicated roller. If the
contaminant does not come off,
replace appropriate roller or
assembly.
Pages have flecks of toner on
them.
Execute a cleaning page to clean
the contaminant off the fuser. The
cleaning page might need to be run
several time to clean the fuser. Do
not replace the fuser.
NOTE: Cleaning the fuser with HP
tough paper provides better results
than with plain paper. You might
need to execute the cleaning
process several times to remove all
contaminants on the fuser.
Pages have one or more
skewed color planes (can
appear on the right or left side
of the page).
Remove, and then reinstall the
toner cartridge associated with the
defect.
Vertical density variations
appear in a particular color.
The surface of the
photosensitive drum has
deteriorated.
Replace the toner cartridge
associated with the defect.
The laser/scanner is
defective.
Replace the laser/scanner
assembly
Repetitive white spots appear in
the image.
Repetitive white spots appear
in the image.
See the repetitive image defect
ruler. Clean the indicated roller. If
the contaminant does not come off,
replace appropriate roller or
assembly.
ENWW Solve image quality problems 717
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