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Confidential
■ Ghost
■ Inter-color position alignment
■ Fogging
<User Check>
• Check the usage environment of the machine. Using the machine in
hot-humid or cold-dry conditions can cause this problem.
• Check whether appropriate paper type is selected on the driver.
• Select “Improve Toner Fixing” in the driver.
• Make a print in the color mode.
• Replace the drum unit with a new one.
Step Cause Remedy
1
Scratch or dirt on the fuser unit
Replace the fuser unit.
2
High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB.
<User Check>
• Implement the adjustment of color registration (adjustment of inter-color
position alignment).
• Replace the belt unit with a new one.
• Replace the drum unit with a new one.
• Replace the waste toner box with a new one.
Step Cause Remedy
1
Registration mark sensor L or
registration mark sensor R
failure
Replace the registration mark sensor ASSY.
2 Main PCB failure Replace the main PCB.
<User Check>
• Check the usage environment of the machine. Using the machine in
hot-humid or cold-dry conditions can cause this problem.
• Check if the acid paper is not used.
• This problem may disappear after printing multiple sheets of paper.
• Replace the toner cartridge with a new one.
• Replace the drum unit with a new one.
Step Cause Remedy
1 Main PCB failure Replace the main PCB.
Note:
This problem tends to occur when the life of the drum unit or toner cartridge is expiring.
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