OKI C651dn error 802: Maintenance Solution
The OKI C651dn error 802 is a system notification indicating that a drum unit has hit its page-count limit or is failing to communicate. Because drum units are vital for print precision, the printer locks itself to prevent quality degradation. This guide provides steps to identify the failing drum and troubleshoot the error.
Common causes
- 1Drum reached page-count threshold.
- 2Toner dust on the drum sensor.
- 3Damaged drum surface (scratch).
- 4Oxidized electrical connector.
Solutions
Diagnóstico rápido
The panel menu usually identifies which drum is reporting the 802 failure. If no specific drum is listed, inspect all four for physical damage.Solución paso a paso
- Check Panel: Identify the failing color.
- Clean: Wipe the drum sensor with a dry cloth.
- Reseat: Reinsert firmly.
Prevención y mantenimiento
Keep the printer in a climate-controlled room. Clean the interior periodically to prevent toner dust from blinding the optical sensors.Cuándo llamar a un técnico
If the error 802 continues after replacing the drum, a mainboard or drum-interface sensor may be failing.Ficha técnica del equipo
- Technology: 4-Color Digital LED
- Speed: Up to 34 ppm
- Connectivity: LAN and USB
- Capacity: 630 sheets
- Compatible supplies: OKI C651 drum kits (CMYK)
- Recommended use: Heavy-duty office
- Drivers / firmware official
Steps to follow
- 1
Access drums
Open the top cover of the printer.
- 2
Check drum
Identify the drum with the error indicator and inspect it for toner build-up.
- 3
Reinstall or replace
Ensure it's clicked in or replace with a new unit.
Frequently asked questions
It signals that a drum unit has reached its end of life or failed to register correctly.
Yes, if print quality is compromised, you should replace it to avoid damaging the transfer belt.
Individual CMYK drum kits and high-yield toner cartridges.
Regular maintenance and vacuuming the interior helps keep sensors clean.