Epson EPL-7500 User Manual page 171

Decline in Print Quality
Problem
The print quality is
not what you expect
(continued.)
image
The printed
is too dark.
The non-printed
side of the page is
dirty.
7-32 Troubleshooting
Solution
The print density knob may not be set
correctly. Raise the printer cover and turn
the print density knob counterclockwise.
See Chapter 2 for information on adjusting
the print density knob.
If the problem persists, replace the imaging
cartridge as described in Chapter
Toner may have spilled in the paper feed
path. Clean the inside of the printer as
described in Chapter
6.
6.