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ERROR CODE and TROUBLESHOOTING
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8.3.22 Copy process related service call
[C021] Developer unit motor-YMC locking error
[C022] Developer unit mixer motor-YMC locking error
Classification Error item
Copy process related service call The developer unit motor-YMC is not rotating normally
Check item Measures
LGC board • Connector check (CN316)
• Harness check
• Board check
Developer unit motor-YMC • Motor check
(Perform the output check: 03-113)
• Connector check
• Driving section check (Is there any abnormality on the
rotation?)
• Harness check
Developer unit • Check if waste toner is clogged on the waste toner
transport path of the YMC-drum cleaner.
• Check if the developer material is excessively supplied to
each YMC-developer unit.
Drive unit • Unit check
• Gear check
• Driving section check
Drum cleaner unit Check if waste toner is clogged on the toner recovery auger
section.
Process unit
Drive section
Check if the gear tooth flank is damaged.
Check if there is any dust between the gear and the shaft.
Check if the contact section between the gear and the shaft is
worn out.
Replace parts Remarks
Developer unit motor-YMC
LGC board
Classification Error item
Copy process related service call The developer unit mixer motor-YMC is not rotating normally.
Check item Measures
LGC board • Connector check (CN316)
• Harness check
• Board check
Developer unit mixer motor-YMC • Motor check
(Perform the output check: 03-115)
• Connector check
• Driving section check (Is there any abnormality on the
rotation?)
• Harness check
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