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Eng
Canon MF5850dn
Troubleshooting. Image. 05 Horizontal white lines, Loose toner, Misformed image
Horizontal white lines
Horizontal white line appears in image
Cause |
Solution |
1) Horizontal scratches on the photosensitive drum |
Replace the cartridge. |
2) The fixing film is defective |
Replace the fixing unit. |
3) Scratches/stain on the Developing Sleeve |
Replace the cartridge. |
Loose toner
Toner image is not fully fixed on the media
Cause |
Solution |
1) The pressure roller is not within nip-width
specifications |
See "MAINTENANCE AND SERVICE" to check
the nip-width specifications. If the pressure roller is not within the specifications, replace the fixing unit. |
2) The pressure roller is dirty |
Replace the fixing unit. |
3) The pressure roller is scarred or dent |
Replace the fixing unit. |
4) Scratches or foreign substance on the fixing film |
Replace the fixing unit. |
5) The thermistor has deteriorated |
Replace the fixing unit. |
Misformed image
Image is misformed
Cause |
Solution |
1) Poor contact exists to the connectors on the laser scanner unit |
Reconnect the connectors: J801 and J802 |
2) Poor contact exists to the connectors on the formatter |
Reconnect the connectors: J3 and J7 |
3) The laser scanner unit is defective |
Replace the laser scanner unit. |
4) The high-voltage power supply is defective |
Replace the engine controller unit. |