ES3640e MFP User’s Guide
Troubleshooting - 157
Dealing with unsatisfactory printing
Symptoms
Possible causes
Steps to take
Vertical white lines
can be seen on the
printed page.
The LED head is dirty.
Wipe the LED head with a
LED lens cleaner or with a
soft cloth.
The toner is low.
Replace the toner cartridge.
Foreign materials may
be present in the image
drum.
Replace the image drum
cartridge.
Light-shielding film of
the image drum
cartridge is dirty.
Wipe the film with a LED
lens cleaner or with a soft
cloth.
Printed images are
fading vertically.
The LED head is dirty.
Wipe the LED head with a
LED lens cleaner or with a
soft cloth.
The toner is low.
Replace the toner cartridge.
The paper is not
suitable for the printer
unit.
Use recommended paper.
Printing is light.
The toner cartridge is
not properly seated.
Reinstall the toner
cartridge.
The toner is low.
Replace the toner cartridge.
The paper is moist.
Use paper stored in proper
temperature and humidity
conditions.
The paper is not
suitable for the printer
unit.
Use recommended paper.
Thickness and type of
paper are inappropriate.
Set a proper value for
[Media Weight] and [Media
Type] in the menu setup, or
set one value thicker for
[Media Weight].
Recycled paper is being
used.
Set one value thicker for
[Media Weight] in the menu
setup.
Partially faded
images. White
spots and lines
appear in solid
printing.
Paper is moist or dry.
Use paper stored in proper
temperature and humidity
conditions.