c960ES9410

OKI ES9410 error C960: How to Fix

The OKI ES9410 error C960 is a system alert indicating a loss of communication between the main unit and one or more imaging drums. This error immediately halts any print job because the system cannot verify the operational status of the imaging components. The failure is typically caused by poor electrical connection, dirt on contact pins, or a drum nearing the end of its life.

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Common causes

  • 1Loose electrical connection between the drum and the base.
  • 2Corrosion or dirt on the drum golden contacts.
  • 3Exhausted imaging drum failing to read its internal chip.
  • 4Fault in the internal printer communication board.

Solutions

Quick Diagnosis

If you see the C960 code on the control panel, check if any drum replacements were recently performed. Often, a drum may not be correctly seated after a consumable change.

Step-by-Step Solution

  1. Power off the printer and allow it to cool.
  2. Remove the drums one by one to inspect the connectors.
  3. Clean the golden terminals with a soft cloth lightly dampened with isopropyl alcohol.
  4. Reinsert the drums ensuring they click firmly into their guides.
  5. Turn on the machine so the system can re-verify the connection.

Prevention and Maintenance

Avoid touching the drum's photosensitive surface. Perform an internal cleaning with compressed air every 50,000 pages to prevent residual toner from interfering with connections.

When to Call a Technician

If after cleaning the contacts and testing with a new drum the error persists, the DC controller board might have a fault in the communication channels.

Equipment Technical Data

  • Technology: Digital color LED
  • Speed: Up to 40 ppm
  • Connectivity: USB 2.0, Ethernet, OkiLAN
  • Capacity: Up to 2,880 sheets
  • Compatible Consumables: OKI ES9410 drum and toner kits
  • Recommended Use: Graphic production and high-volume office
  • Official Drivers / Firmware

Steps to follow

  1. 1

    Visual Inspection

    Open the front cover and verify that all drum units are firmly seated.

  2. 2

    Clean Contacts

    Clean the golden drum contacts with a dry, clean cloth.

  3. 3

    Restart

    Reinstall drums and restart the printer to force a new scan.

Frequently asked questions

The C960 error indicates a communication failure between the main board and the imaging drums.

No, this error locks the system until the affected drum is identified.

Use original drum kits for the ES9410 to avoid communication errors.

Yes, toner dust accumulation on the contacts is the most common cause.

OKI ES9410 error C960: How to Fix | Vimazdev