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

Image Problem Troubleshooting
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
D093/D094 7-10 SM