c-2402bizhub PRO 951

Konica Minolta bizhub PRO 951 error C-2402: Fix

The Konica Minolta bizhub PRO 951 error C-2402 relates to a Toner Concentration (TCR) failure. Why is my bizhub PRO 951 showing C-2402? This happens when the mixing ratio of developer and toner is not detected within standard operational thresholds.

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Common causes

  • 1Developer density out of range
  • 2Sensor contamination
  • 3Drive gear blockage
  • 4Depleted developer material

Solutions

Diagnóstico rápido

Check for irregular toner delivery or build-up around the TCR sensor. If the machine can't sense toner concentration, it halts to protect the developer unit.

Solución paso a paso

  1. Remove the developer assembly.
  2. Clean the TCR sensor optical interface.
  3. Inspect for developer clumping.
  4. Run TCR stabilization through service mode.

Prevención y mantenimiento

Adhere to the strict replacement schedule for developer material. Control humidity to avoid clogging.

Cuándo llamar a un técnico

If cleaning fails, the developer unit drive gears might be worn out.

Ficha técnica del equipo

  • Technology: Electrophotographic Laser
  • Performance: 95 ppm
  • Connectivity: Gigabit Ethernet
  • Feed capacity: Up to 9,000 sheets
  • Consumables: TN-910 toner
  • Use case: Production printing
  • Drivers / official firmware

Steps to follow

  1. 1

    Check assembly

    Inspect the developer unit.

  2. 2

    Clean

    Clean the TCR sensor.

  3. 3

    Initialize

    Run the setup procedure.

Frequently asked questions

The sensor detects a mismatch in toner concentration.

It halts production and can damage print quality.

Use original TN-910 series toner.

Every 100k pages or according to PM schedule.