Ricoh D093 - Black Spots at Regular Intervals (Pitch); Dirty Background; Printing Troubles; Random Black Spots

Image Problem Troubleshooting
D093/D094 7-10 SM
7.1.4 PRINTING
1. Dirty Background
Possible causes:
 Dirty ID sensor
 Deteriorated developer
 Deteriorated OPC drum
 Excessive toner due to toner over supply
2. Black Spots at Regular Intervals (Pitch)
Possible causes:
 Scratched OPC drum (250 mm pitch)
 Scratched hot roller (157 mm pitch)
 Scratched pressure roller (173 mm pitch)
3. Random Black Spots
Possible causes:
 Toner scattering caused by bent entrance seal in cleaning unit
 Developer scattering caused by defective seals in development unit
 Deteriorated OPC drum
 Hot roller cleaning roller dirty