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Troubleshooting • 134
Fading in patches
Longitudinal black stripes
Toner is low. Change toner cartridge (see “Toner Cartridge
Replacement” on page 72).
The paper is moist. Store paper within specified temperature and
humidity levels (see “Specifications” on
page 142).
Paper is unsuitable for
printer.
Use recommended paper (see“Media
Recommendations” on page 10).
Possible cause Remedy
The paper is moist. Store paper within specified temperature and
humidity levels (see “Specifications” on page 142).
Possible cause Remedy
Image drum is
damaged.
Replace image drum (see “Image Drum
Replacement” on page 80).
Toner is low. Change toner cartridge (see “Toner Cartridge
Replacement” on page 72).
Periodic black lateral
lines or spots.
• If the lines or spots occur at intervals of
approximately 44 - 94 mm, the green surface of
the image drum is damaged or dirty. If damaged,
replace the image drum cartridge (see “Image
Drum Replacement” on page 80). If dirty, wipe the
image drum gently with soft tissue. If this does not
work, replace the image drum.
• If the lines or spots occur at intervals of
approximately 113 mm, the fuser roller is
damaged. Change the fuser (see “Fuser
Replacement” on page 95).
The image drum has
been exposed to
light.
Remove the image drum from the printer and store
it in a dark place for several hours. If this does not
work, replace the image drum (see “Image Drum
Replacement” on page 80).
Possible cause Remedy