Do you have a question about the MF720 Series and is the answer not in the manual?
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Thomas R O'Neil
April 28, 2025
how do you fix cyan lines and dotd on print out when automatic maintenance does not work
1 comments:
Mr. Anderson
May 15, 2025
To fix cyan lines and dots on prints for the Canon MF720 Series when automatic maintenance does not work, follow these manual steps:
1. Clean relevant parts manually: - Use lint-free paper to clean key components that may affect print quality: - Fixing front guide - Laser beam window glass - Multi-purpose tray separation pad, pickup roller, and feed roller - Cassette pickup roller and separation roller - Registration upper guide - For heavy soil, use alcohol with lint-free paper.
2. Check and adjust the white level settings: - Enter service mode and adjust white level settings: - COPIER > FUNCTION > CCD > DF-WLVL1 (book mode) - COPIER > FUNCTION > CCD > DF-WLVL2 (ADF mode) - Adjust shading target values in: - COPIER > ADJUST > CCD > DFTAR-R (set to "299") - COPIER > ADJUST > CCD > DFTAR-G - COPIER > ADJUST > CCD > DFTAR-B (set to "309") - If adjustment fails, turn the power OFF and ON, then repeat the process.
These steps help remove contaminants and recalibrate imaging sensors, which can correct cyan lines and dots.
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Do you have a question about the MF720 Series and is the answer not in the manual?
Questions and answers
how do you fix cyan lines and dotd on print out when automatic maintenance does not work
To fix cyan lines and dots on prints for the Canon MF720 Series when automatic maintenance does not work, follow these manual steps:
1. Clean relevant parts manually:
- Use lint-free paper to clean key components that may affect print quality:
- Fixing front guide
- Laser beam window glass
- Multi-purpose tray separation pad, pickup roller, and feed roller
- Cassette pickup roller and separation roller
- Registration upper guide
- For heavy soil, use alcohol with lint-free paper.
2. Check and adjust the white level settings:
- Enter service mode and adjust white level settings:
- COPIER > FUNCTION > CCD > DF-WLVL1 (book mode)
- COPIER > FUNCTION > CCD > DF-WLVL2 (ADF mode)
- Adjust shading target values in:
- COPIER > ADJUST > CCD > DFTAR-R (set to "299")
- COPIER > ADJUST > CCD > DFTAR-G
- COPIER > ADJUST > CCD > DFTAR-B (set to "309")
- If adjustment fails, turn the power OFF and ON, then repeat the process.
These steps help remove contaminants and recalibrate imaging sensors, which can correct cyan lines and dots.
This answer is automatically generated