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Confidential
■ One color spots or dirt
<User Check>
- Damp (wet) paper might be used. Try to changing to freshly unopened paper.
- 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.
■ One color band
<User Check>
- Clean the inside of the printer and the corona wire in the drum unit. If the same problem
occurs after cleaning, replace the drum unit with a new one.
- Refer to the User’s guide and remove the dirt on the exposure drum using a cotton swab.
- The paper tray ground terminal provided in the printer body may be dirty. Clean the contact
with a dry cloth.
Step Cause Remedy
1 Dirt on the pinch roller of the
paper tray
Refer to Fig. 2-14 (P2-105) and clean the
pinch roller.
2 Exposure drum dirty Refer to "2.8 Drum Cleaning" in Chapter 5
and perform drum cleaning.
3 Fuser unit failure Replace the Fuser unit.
4 High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
5 Toner/New sensor PCB
failure
Replace the Toner/New sensor PCB ASSY.
Step Cause Remedy
1 Exposure drum dirty Refer to "2.8 Drum Cleaning" in Chapter 5
and perform drum cleaning.
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