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48
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Printing Troubles
Troubleshooting
1
2
Index
Maintenance
Symptom
Cause
Troubleshooting
Reference
pages
Stripes or dots appear
periodically in horizontal
direction.
Paper feeding direction
In the case of cycle length of
about 125 mm, image drum
may be unclean or there may
be dents on it.
Wipe it lightly with a soft tissue
paper.
If there are dents, replace the
image drum.
In the case of cycle length of
about 38 mm, there is dirt
inside the image drum.
Open and close the toner
replacement cover, and repeat
the initial operation.
Basic
In the case of cycle length of
about 150 mm, there are dents
on the fuser unit.
Replace the fuser unit.
Image drum is exposed to light. Return the image drum inside
the printer, and do not use the
printer for a few hours. If it
does not rectify even after that,
replace the image drum.
Dirt has deposited on the paper
transfer path.
Print few pages as test copies.
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Portion of white ground is
lightly stained.
Paper has static electricity.
Use paper stored at appropriate
temperature and humidity.
Basic
Thick paper is used.
Use thinner paper.
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Low toner.
Replace the toner cartridge.
Basic
Border of characters is blurred. LED head is unclean.
Wipe it with a soft tissue paper.
Paper not supported.
Use recommended paper.
Basic
Paper is moist.
Replace with a new paper.
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When printing postcards,
envelopes, or coated papers,
printing will be thinly stained
overall.
Printing of envelopes and
coated papers will result in
toner deposit overall.
Device has not broken down.
Do not use coated paper to the
extent possible.
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Rubbing it off will remove the
toner.
Type and thickness setting of
paper is inappropriate.
Correct [Media Weight] in the
operation panel to appropriate
value. Or, change [Media
Weight] to a thicker value than
the present value.
Advanced
Recycled paper is used.
Correct [Media Weight] in the
operation panel to appropriate
value. Or, change [Media
Weight] to a thicker value than
the present value.
Advanced
Specks appear on glossy
papers.
Type and thickness setting of
paper is inappropriate.
Correct [Media Weight] in the
operation panel to appropriate
value. Or, change [Media
Weight] to a thicker value than
the present value.
Advanced
Summary of Contents for C911dn
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