Toner Specks Check; Narrow Vertical Line Check; Random Marks Check - Lexmark CX310 Service Manual

Toner specks check

Keep running prints through, and the problem normally clears up. If the problem persists, then replace the developer
cartridge.

Narrow vertical line check

Actions
Replace the photoconductor unit.
Does this solve the problem?

Random marks check

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.
Actions
Step 1
Is there any loose or foreign material on the imaging unit?
Step 2
Is there any loose or foreign material on the developer roll?
Step 3
Is there any loose or foreign material on the transfer belt?
Yes
The problem is solved. Replace the developer
Yes
Inspect the imaging
unit by looking at the
individual developers
and photoconductors.
Clean or replace the
faulty unit. See
"Imaging unit (IU)
removal" on page
267.
Replace the developer
unit.
Replace the image
transfer unit. See
Image transfer unit
(ITU).
Diagnostic information
44
7527
No
unit.
No
Go to step 2.
Go to step 3.
Contact your next level
of support.