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Confidential
■ White spots on one color image
<User Check>
- Check if the fuser fan and/or blower are not blocked.
- Refer to the User’s guide and remove the dirt on the exposure drum using a cotton swab.
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
- Replace the belt unit with a new one.
Fig. 2-12
Step Cause Remedy
1 Paper dust is accumulated Referring to the figure below, remove paper
dust attached on the paper dust cleaning
roller.
2 Dirt on the exposure drum Perform drum cleaning.
(Refer to “2.1 Drum Cleaning” in Chapter 5.)
3 Toner filter is clogged Clean the toner filter.
4 Scratch and dirt on fuser unit Replace the fuser unit.
5 High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
Paper dust
Rib
Paper tray
Paper dust cleaning roller
Rib
Paper dust cleaning roller cover
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