Lexmark 13P0195 - C 750dn Color Laser Printer, Service Manual

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2-146
Service Manual
5060-00 x
Smudged or distorted images on fused page
Toner is on the back of the printed page
Do the following steps before proceeding with this service check:
1.
Enter the Diagnostics Mode.
2.
Select Print Test , Tray 1 , Continuous from the menu.
3.
Run at least 20 pages of text and see if the problem remains.
•
If toner is still on the back of the printed page, proceed with this service check.
•
If the problem is on the top two inches of the page replace the second transfer roll.
•
If the toner is “stringy” over the top half of the page, go to step 1.
Step Action and questions Yes No
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?
Remove the debris Go to step 2
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?‘
Remove the debris Look for any signs
of damage to the
ITU belt. If found,
replace the ITU
assembly.
Step Action and questions Yes No
1 Media settings - Check to see if the printer is set for
light paper.
Is the printer set for light paper?
Set the printer for
current media type
and go to step 2 Go to step 3
2 Does resetting the media type fix the problem? Problem solved Go to step 3
3 Fuser settings - Set the fuser to High in the CE menu.
Does setting the fuser to High fix the problem?
Problem solved Replace the fuser
assembly. See
“Fuser assembly
removal” on
page 4-31