Print Quality-Mottle (2-5Mm Speckles); Print Quality-Narrow Vertical Line; Print Quality-Random Marks - Lexmark X548 Series Service Manual

Print quality—mottle (2–5mm speckles)
Keep running prints through, and the problem normally clears up. If the problem persists,
replace the developer cartridge.
Print quality—narrow vertical line
Step Questions / actions
Replace the photoconductor unit. See
1
"Developer unit removal" on page
Print quality—random marks
Service tip: The primary cause of random marks is due to loose material moving around inside the printer and
attaching to the photoconductor unit, developer roll, or transfer belt.
Step Questions / actions
1 Is there any loose or foreign material on the
imaging unit?
2
Is there any loose or foreign material on the
developer roll?
3 Is there any loose or foreign material on the
transfer belt?
Yes
Problem solved.
4-47.
Yes
Inspect the imaging unit by
looking at the individual
developers and
photoconductors. Clean or
replace the faulty unit. See
"Developer unit removal"
on page 4-47.
Replace the developer unit.
Replace the image transfer
unit. See
"Image transfer
unit (ITU) removal" on
page 4-43.
7525-63x
ABCDE
ABCDE
ABCDE
No
Replace the developer unit.
See
"Developer unit
removal" on page 4-47.
No
Go to step 2.
Go to step 3.
Contact your next level of
support.
Diagnostic information
2-51
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