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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.