Brother DCP9042CDN
Troubleshooting. Image Defect. One color is light, Faulty registration
One color is light
User Check
- Check the machine’s environment. High temperature and high humidity conditions can cause this problem.
- Replace the toner cartridge or drum unit with a new one.
- Implement calibration from the control panel.
Step | Cause | Check | Result | Remedy |
---|---|---|---|---|
1 | Dirt on exposure drum electrode | Are the electrodes of the drum unit and the appropriate color and machine body dirty? | Yes | Clean both electrodes. |
2 | Dirt on belt unit electrode | Are the electrodes of the belt unit and the appropriate color and machine body dirty? | Yes | Clean both electrodes. |
3 | Dirt on scanner windows | Is the scanner windows of the appropriate color dirty? | Yes | Wipe the dirt off with a soft, clean, lint free cloth. |
4 | Toner sensor failure | After replacing the toner cartridge of the appropriate color with a new one, does the same problem occur even after printing several pages? | No | Replace the toner cartridge of the appropriate color |
5 | Toner sensor failure | Does the machine start printing even after removing the toner cartridge of the appropriate color from the drum unit? | Yes | - Clean the toner sensor of the appropriate color. - Check the harness connection of the toner sensor PCB ASSY (TE/NEW) of the appropriate color. - Replace the toner sensor PCB ASSY (TE/NEW) of the appropriate color. |
Faulty registration
Step | Cause | Check | Result | Remedy |
---|---|---|---|---|
1 | Registration rear actuator operating smoothly or is it catching. | Does the registration rear actuator move smoothly? | No | Re-assemble the registration rear actuator. |
2 | Engine PCB failure | Is the problem solved after replacing the engine PCB ASSY? | Yes | Replace the engine PCB ASSY. |