650C931 Series

OKI C931 Series error 650: Toner Cartridge Fault

The OKI C931 Series error 650 indicates a communication failure between the toner cartridge chip and the printer electronics. This often occurs when using non-genuine consumables or if the contact terminals are dirty. Restoring a secure physical connection is the primary troubleshooting method.

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Common causes

  • 1Contaminated cartridge contact chip.
  • 2Incompatible chip communication protocols in third-party toners.
  • 3Oxidation or toner buildup on printer side terminals.
  • 4Cartridge misaligned in the printer housing.

Solutions

Diagnóstico rápido

Error 650 identifies exactly which color toner has a read issue. Check if the toner cartridge is correctly engaged in its housing.

Solución paso a paso

  1. Inspect cartridge: Remove the indicated toner and ensure the contact chip is clean and free of tape or debris.
  2. Reseat firmly: Reinsert the cartridge, ensuring it clicks fully into the slot.
  3. Wait for status update: Close the cover and wait for the machine to update its inventory status.
  4. Clean contacts: Use a lint-free cloth with isopropyl alcohol to clean the metallic contacts of the cartridge if issues persist.

Prevención y mantenimiento

Only use genuine C900 Series toners. Avoid touching the metallic chip on the cartridge, as skin oils can degrade connectivity over time.

Cuándo llamar a un técnico

If the error 650 remains after trying a genuine new toner, the printer's internal contact board for that specific slot may be damaged.

Ficha técnica del equipo

  • Technology: LED Laser Color Printer
  • Speed/Performance: 50 ppm
  • Connectivity: Gigabit Ethernet
  • Paper Capacity: 530 sheets
  • Compatible Consumibles: Original C900 Series toner
  • Recommended Use: High-volume document production
  • Official drivers / firmware

Steps to follow

  1. 1

    Inspect cartridge

    Remove the indicated toner and ensure the contact chip is clean and unobstructed.

  2. 2

    Reseat firmly

    Reinsert the cartridge, ensuring it clicks fully into the slot.

  3. 3

    Wait for status update

    Close the cover and wait for the machine to update its inventory.

Frequently asked questions

Error 650 indicates that the toner cartridge chip cannot communicate with the printer mainboard.

Using genuine consumables is best practice to avoid chip compatibility errors common with third-party products.

This is a critical lock. You must resolve the cartridge communication issue to resume any printing.

Replacement frequency depends on your print volume; always have a backup set ready to avoid downtime.

OKI C931 Series error 650: Toner Cartridge Fault | Vimazdev