Toner Smears Or Rubs Off The Page With No Error Code Displayed; Smudged Or Distorted Images On Fused Page - Lexmark C77x Service Manual

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Toner smears or rubs off the page with no error code displayed

Note: This type of problem is associated with improper fusing or incorrect settings for media type being used.
Step Actions and questions
1 Media settings—Does the media setting match the
current media type?
2 Does resetting the media type fix the problem?
3 Fuser settings—Set the fuser to High in the CE menu.
Does setting the fuser to High fix the problem?

Smudged or distorted images on fused page

Step Actions and questions
1 Remove the ITU assembly and check for any signs of
debris near the paper feed reference edge mechanism
underneath the ITU assembly.
Are there any signs of any debris in this location?
2
Check for any signs of debris on the surface of the ITU
belt near the toner patch sensor (TPS) which is the
white egg shaped device located on the front left
corner of the ITU assembly.
Note: When toner cartridges are replaced, small
pieces of plastic may drop off of a toner cartridge and
be deposited on the ITU belt.
Are there any debris in this location?
2-102
Service Manual
Yes No
Set the printer for Go to step 3
current media
type, and go to
step 2.
Problem resolved Go to step 3
Problem resolved Replace the fuser
assembly. See
"Fuser
assembly
removal" on
page
Yes No
Remove the Go to step 2
debris.
Remove the Look for any
debris. signs of damage
to the ITU belt. If
found, replace
the ITU
assembly. See
"ITU assembly
removal" on
page
4-44.
4-49.