Diagnostic information 2-65
7100-XXX
White spot / black spot service check
A white spot and black spot appear on paper.
Problem area Action
1 Photodeveloper cartridge
There are foreign particles adhering to photodeveloper OPC
belt. Remove photodeveloper cartridge (see
“Photodeveloper cartridge removal” on page 4-8).
Lightly wipe off foreign particles using a cotton cloth.
If problem persists, replace photodeveloper cartridge.
2 Transfer belt unit
There are foreign particles adhering to transfer belt unit.
Remove transfer belt unit (see “Transfer belt unit removal”
on page 4-5).
Lightly wipe off foreign particles using a cotton cloth.
If problem persists, replace transfer belt unit.
3 Toner cartridge
Foreign particles mixed in toner. Replace toner cartridge.
4 Transfer roller
There are foreign particles adhering to transfer roller, or
transfer roller is deformed. Replace transfer roller. See
“Transfer roller removal” on page 4-6.
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