Toner On Back Of Page; Solving Print Quality Problems - Lexmark E120 Service Manual

Toner on back of page

FRU
PC Kit (not a FRU)
Fuser
Transfer roll

Solving print quality problems

To solve many print quality problems, replace supply or maintenance items that have reached the end of their
intended life. Use the following table for solutions. For defects repeating down the page at a fixed distance, see
the chart at the back of the book to determine the cause.
Symptom
White lines
ABCDE
ABCDE
ABCDE
Streaked horizontal
lines
Action
Print a menu page (press and release
and check settings for the correct media type.
Inspect the overall paper path for signs of spilled toner.
Gently clean the contaminated areas with a soft cloth.
The fuser hot roll can cause toner deposits on the back of the paper if toner is
building up on the hot roll. This buildup may transfer to the backup roll, later
transferring to the back of the paper.
Inspect the hot roll and backup roller for signs of contamination.
Replace the fuser as necessary.
Check to make sure that the paper size being used is large enough for the image
settings in the driver. Printing the images off of the paper will transfer the toner to
the transfer roll, and then to the back of the page. Correct the paper size or the
settings and run test pages to clear up the roll.
A transfer roll contaminated with toner can cause toner to transfer to the back of
printed pages.
Inspect the transfer roll for contamination, and replace it as necessary.
Cause
• The toner cartridge or the fuser
may be defective.
• The laser beam's path may be
blocked in a certain area of the
lens.
If the lines are parallel to lines that
are supposed to be there, see
"Ghost images" on page
The toner cartridge or the fuser may
be defective, empty, or worn.
when the printer is in the ready state)
Solution
• Replace the toner cartridge or the
fuser, as needed.
• Check the lens opening (above the
toner cartridge) for debris. Remove
particles.
Replace the toner cartridge or the
fuser, as needed.
2-38.
Diagnostic information
4506-1xx
2-37