Half-tone images print unevenly, A vertical line appears on the printout, Toner smudges – Epson AcuLaser MX20DNF User Manual
Page 231

Half-tone images print unevenly
Cause
What to do
Your paper may be moist or damp.
Do not store paper in a humid or damp environment. Be sure to
use paper that is newly unwrapped.
The toner cartridge may be near the end of its service
life.
If the message on the LCD panel or in EPSON Status Monitor
indicates that the toner cartridge is near the end of its service life,
replace the toner cartridge. See “Replacing Consumable
Products/Maintenance Parts” on page 194.
For Windows users, you can also check the remaining service life
of the toner cartridge by looking at the Basic Settings tab in the
printer driver.
The gradation setting is too small when printing
graphics.
For Windows users, on the Basic Settings tab in the printer driver,
select Advanced and click the More Settings button. Then select
the Halftoning.
There may be a problem with toner cartridge.
Replace the toner cartridge. See “Replacing Consumable
Products/Maintenance Parts” on page 194.
A vertical line appears on the printout
Cause
What to do
Either the metal roller or photoconductor wire inside the
printer is dirty.
Clean the metal roller and photoconductor wire inside the printer.
For details, see “Cleaning inside the printer” on page 198.
Toner smudges
Cause
What to do
Your paper may be moist or damp.
Do not store your paper in a humid or damp environment.
You may not be using the correct type of paper for your
printer.
EPSON Color Laser Paper or smooth, high-quality copier paper is
recommended for best results. See “Available paper types” on
page 272 for information on choosing paper.
The paper path inside the printer may be dusty.
Clean internal printer components by printing three pages with
only one character per page.
There may be a problem with toner cartridge.
Replace the toner cartridge. See “Replacing Consumable
Products/Maintenance Parts” on page 194.
Epson AcuLaser MX21/MX20 Series User's Guide
Troubleshooting 231