Black Vertical Lines; Blur At Bottom Of Page - Lexmark Optra C Service Manual

5045-001

Black Vertical Lines

Symptom:
Thin vertical black lines of any length, anywhere on the page.
Cause:
Worn out or damaged photoconductor. This may be caused by the
photoconductor reaching end-of-life or damage resulting from a
severe paper jam.
Resolution:
Replace the photoconductor. Do not use a used photoconductor for
diagnostic purposes. The printer determines photoconductor life by
its electrical characteristics. Swapping used photoconductors may
result in inaccurate photoconductor life, which may result in
customer dissatisfaction or a service call.

Blur at Bottom of Page

Symptom:
A horizontal defect approximately 17 mm from the bottom of the
page. This defect is composed of vertical streaks, smears or a blur.
In severe cases, there may also be a blur 17 mm from the top of the
page.
Cause:
Certain weight and composition papers (mostly cotton), are not
adhering to the transfer drum. This causes the trailing edge to "flap",
contacting the developer roller in the cartridge or the
photoconductor.
Resolution:
Change paper types.
Diagnostic Information 2-55