ES3640e MFP User’s Guide
Troubleshooting - 158
Vertical lines
appear.
The image drum
cartridge is damaged.
Replace the image drum
cartridge.
The toner is low.
Replace the toner cartridge.
Horizontal Lines
and spots appear
periodically.
When the interval is
about 94mm (4in), the
image drum (the green
tube) is damaged or
dirty.
Wipe it lightly with a soft
cloth. Replace the image
drum cartridge when it is
damaged.
When the interval is
about 42mm (1.5in),
there may be foreign
particles in the image
drum cartridge.
Open/close the top cover,
and print again.
When the interval is
about 87mm (3.5in),
the fuser unit is
damaged.
Replace the fuser unit.
The image drum
cartridge has been
exposed to light.
Replace the image drum
cartridge if the problem is
not resolved.
White area of paper
is lightly stained.
Paper contains static.
Use paper stored in proper
temperature and humidity
conditions.
Too thick paper is used.
Use thinner paper.
The toner is low.
Replace the toner cartridge.
Periphery of the
letters is smudged.
The LED head is dirty.
Wipe the head with LED lens
cleaner or with a soft cloth.
Toner comes off
when it is rubbed.
The thickness and type
of the paper are
incorrectly set.
Set the correct value of
[Media Type] and [Media
Weight] in the menu setup
or set one value thicker for
[Media Weight].
Recycled paper is used.
Set one value thicker for
[Media Weight] in the menu
setup.
Glossiness is not
uniform.
The thickness and type
of the paper are
incorrectly set.
Set the correct value of
[Media Type] and [Media
Weight] in the menu setup
or set one value lighter for
[Media Weight].
Symptoms
Possible causes
Steps to take
