Service manual

Image Defect Troubleshooting (Defect of the Print)
SM 6-57 M085/M086
Trouble –
shooting
13 White horizontal streaks
User Check
1. Check that the appropriate media type is selected in the printer driver.
2. The problem may disappear by itself. Try printing multiple pages to clear this problem
especially if the machine has not been used for a long time.
3. The drum unit may be damaged. Replace the drum unit with a new one.
Possible cause and Remedy
1. Toner cartridge electrode connection failure
 Are the electrodes on the toner cartridge and machine body dirty?
Yes: Clean both electrodes. (
p.6-21 "Electrodes location on the drum unit" and
p.6-21 "Electrodes location on the machine")
2. Drum unit electrode connection failure
 Are the electrodes on the drum unit and machine body dirty?
Yes: Clean both electrodes. (
p.6-21 "Electrodes location on the drum unit" and
p.6-21 "Electrodes location on the machine")