Vertical Lines Or Streaks; Horizontal Lines Or Streaks - Lexmark C760 Service Manual

5060-4xx
One color has light print over the entire page
Step Action and questions
1 Print cartridge - Make sure the cartridge is seated
properly and all packaging material is removed from
the cartridge.
Has all packaging material been removed and the
cartridge seated correctly?
2 Print cartridge - The cartridge may be out of toner.
Change or switch the cartridge.
Does the issue persist?
3 Cartridge contact assembly - Check the cartridge
contact block. Make sure the PC drum contact pin is
not stuck. See
locations (cyan, magenta and yellow)" on page 5-4
to identify the PC drum contact pin.
Does the PC drum contact pin move freely?

Vertical lines or streaks

Step Action and questions
1 Are the vertical streaks visible outside the printed
image?
2 Are the vertical streaks in a single color?
3
Vertical streaks in a single color, which are visible
outside the printed, are most likely caused by a cleaner
problem in the print cartridge.
Are streaks magenta, cyan, or yellow

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?
2-134
Service Manual
"Cartridge contact assembly pin
Yes No
Go to step 2 Remove the
packaging
material and seat
the cartridge.
Go to step 3 Problem resolved
Replace the Replace the
FRUs in the order "Cartridge
shown: contact
assembly" on
• "Cartridge
page
contact
assembly"
on
page 4-29.
• "Developer
HVPS
board" on
page 4-31.
Yes No
Go to step 2 Replace the
cartridge.
Go to step 3 Replace the
assembly" on
page
Replace the Replace in order:
cartridge.
• Black print
cartridge
• "ITU
assembly"
on
page
"Print quality defect locator chart"
Yes No
Replace the Go to step 2
cartridge.
4-29.
"ITU
4-44.
4-44.