Your cyan's going patchy or leaving a faint blue haze on every page. That's the drum, not the toner. This OKI cyan drum unit slots into your C711N and gets that colour channel back where it should be. Pull the old one, click in the new one, done
| 0 | C711N |
| brand | OKI |
| category | Printing |
| subcategory | Ink Toner & Ribbons |
| colour | Cyan |
| type | Drum Unit |