2-105
Confidential
■ White spots on one color image
<User Check>
- Check if the fuser fan and low-voltage power supply PCB fan are not blocked.
- Toner may be empty. Replace the toner cartridge with a new one.
- Refer to the User’s guide and remove the dirt on the exposure drum using a cotton swab.
- The drum unit may be damaged. Replace the drum unit with a new one.
- The belt unit may be damaged. Replace the belt unit with a new one.
■ Pinch roller cleaning procedure
Pull out both sides of the pinch roller cover from the ribs to remove the pinch roller cover.
Clean the pinch roller with a brush as rotating the pinch roller in the arrow direction with
your fingers.
Remove paper dust accumulated in the paper tray by turning over the paper tray.
Fig. 2-14
Step Cause Remedy
1 Dirt on the pinch roller of the
paper tray
Refer to the figure below and clean the pinch
roller.
2 Exposure drum dirty Refer to "2.8 Drum Cleaning" in Chapter 5
and perform drum cleaning.
3 High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
4 Toner/New sensor PCB
failure
Replace the Toner/New sensor PCB ASSY.
Pinch roller cover
Paper dust
Rib
Rib
Paper tray
Pinch roller
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