Canon i-SENSYS MF5840dn
Troubleshooting. Image. 02 Completely blank, All black, White spots
Completely blank
No image prints
Cause | Solution |
---|---|
1) The laser shutter open/close projection part of the cartridge is damaged | Replace the cartridge. |
2) The laser shutter arm and laser shutter are malfunctioning or damaged | If the laser shutter arm or laser shutter does not move smoothly or if the part is damaged, replace any defective parts. |
3) Poor developing bias contact with the cartridge | Clean the contact if dirty. |
4) The high-voltage power supply is defective | Replace the engine controller unit. |
All black
Image is all black
Cause | Solution |
---|---|
1) Poor primary charging bias contact with the cartridge | Clean the contact if dirty. |
2) The primary charging roller is defective | Replace the cartridge. |
3) The high-voltage power supply is defective | Replace the engine controller unit. |
White spots
White spots appear in image
Cause | Solution |
---|---|
1) Poor contact exists to the static charge eliminator | Clean the contact if dirty. |
2) The transfer roller is deformed or has deteriorated | Replace the transfer roller. |
3) Poor contact exists between the transfer roller and its shaft | Clean the contact if dirty. |
4) The high-voltage power supply is defective | Replace the engine controller unit. |
5) Scratches/stain on the Drum | Replace the Cartridge. |