beautypg.com

Jitter service check, Jitter service check” on – Lexmark 5021-0XX User Manual

Page 187

background image

Diagnostic information

2-109

5021-0XX

Jitter service check

Uneven optical density appears periodically in horizontal direction.

Problem area

Action

1

Photodeveloper cartridge

Replace faulty photodeveloper
cartridge. See

“Photodeveloper

cartridge removal” on page 4-11

.

Note: Photodeveloper cartridge is a
customer order supply.

2

Main motor assembly

• Irregular rotation of main motor

assembly

• Main motor assembly gear unit

failure

• Variation of OPC belt running

speed due to failing main motor
assembly

Replace main motor assembly. See

“Main motor assembly removal” on
page 4-38

.

3

Developer drive assembly

Replace faulty developer drive
assembly. See

“Developer drive

assembly removal” on page 4-32

.