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White line i service check – Lexmark 5021-0XX User Manual

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Service Manual

5021-0XX

White line I service check

Vertical white line appears in a specific color area when print quality
test print is run.

Problem area

Action

1

Test print

Run print quality test prints. See

“Print quality test pages” on
page 3-5

. White line appears on

specific color.

2

Toner cartridge

• Developer roller of specifc toner

cartridge is dirty. Remove foreign
particle adhering to specific toner
cartridge developer roller.

• Developer roller surface is

damaged. Replace problem toner
cartridge.