Horizontal Lines Or Streaks; Low Image Density - Lexmark C752 Service Manual

5060-2XX

Horizontal lines or streaks

If the horizontal marks or lines repeat at evenly-spaced intervals, use the
on page 3-4 to determine the part to be replaced.
For lines or marks appearing at random intervals, go to step 1.
Step Action and questions
1 Are the horizontal marks or lines in a single color?
2 Print cartridge(s) - Enter the Diagnostics Mode.
Remove one print cartridge at a time and run a Test
Page to isolate the faulty print cartridge.
Have you isolated the failing print cartridge?
3 Reseat the ITU.
Do the marks/lines persist?
4
Does the printer display an 83 ITU Maintenance
message?

Low image density

Note: If all colors have a low image density problem set the Print Darkness to High from the user's menu.
•
If only one color has a problem, go to "Step A."
•
If all colors have a problem, go to "Step B."
Step A
Step Action and questions
1 Print cartridge - Make sure the print cartridge is seated
correctly.
Is the print cartridge seated correctly?
2 The print cartridge may be out of toner. Try a new print
cartridge.
Does a new print cartridge fix the problem?
2-132
Service Manual
"Print quality defect locator chart"
Yes No
Replace the Go to step 2
cartridge.
Replace the Go to step 3
"Cartridge
contact
assembly for the
failing color on
page 4-28.
Go to step 4 Problem solved
Recommend the Replace the
customer order assembly" on
the ITU page
maintenance kit.
See "Scheduled
maintenance"
on page 6-4.
Yes No
Go to step 2 Install the print
cartridge
correctly and
recheck
Problem solved Replace the
"Transfer HVPS
board" on
page 4-68
"ITU
4-40.