2-97
Confidential
■
White spots on one color image
<User Check>
- Check if the main fan is not blocked.
- Refer to the User’s guide and remove the dirt on the exposure drum using a cotton swab.
- Replace the drum unit or toner cartridge with a new one.
Fig. 2-14
Step
Cause
Remedy
1
Dirt in the paper dust cleaning
roller
Referring to the figure below, remove paper
dust attached on the paper dust cleaning
roller.
2
Scratch and dirt on fuser unit
Replace the fuser unit.
3
High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
4
Main PCB failure
Replace the main PCB ASSY.
Paper dust
Paper dust cleaning roller
Summary of Contents for DCP-9020CDN
Page 47: ...2 8 Confidential 2 2 2 Scanning part Fig 2 4 ...
Page 89: ...2 50 Confidential Electrodes location of main body Fig 2 7 ...
Page 172: ...3 9 Confidential EM2 0 MOLYKOTE EM D110 2 0 mm dia ball EM2 0 Back cover ASSY Back cover ASSY ...
Page 345: ...5 7 Confidential Black and white scanning First side Front Fig 5 1 ...
Page 346: ...5 8 Confidential Black and white scanning Second side Back Fig 5 2 ...
Page 347: ...5 9 Confidential Color scanning First side Front Fig 5 3 ...
Page 348: ...5 10 Confidential Color scanning Second side Back Fig 5 4 ...
Page 384: ...5 46 Confidential LED test pattern M68_L Fig 5 17 ...
Page 429: ...App 3 8 Confidential When the following screen appears click Close to close the screen ...