c-5302bizhub C3350i

Konica Minolta bizhub C3350i error C-5302: Fix

The Konica Minolta bizhub C3350i error C-5302 signals an overheating fault in the fuser unit. To avoid damaging the rollers or the heating assembly, the machine stops immediately. Allowing a sufficient cooldown period is essential before resuming operations.

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Common causes

  • 1Failing thermal sensor
  • 2Blocked vents and dust buildup
  • 3Inadequate cooling environment
  • 4Logic board thermal trip

Solutions

Quick Diagnosis

If C-5302 appears, the thermal sensor has detected heat levels outside of operating range.

Step-by-Step Fix

  1. Power off immediately.
  2. Disconnect power.
  3. Clean external vents to improve airflow.
  4. Wait 30 minutes before re-powering.

Prevention and Maintenance

Keep the printer in a well-ventilated area away from direct heat sources. Regular cleaning of intake vents prevents dust accumulation.

When to call a technician

If the machine continues to overheat after cooling, the thermal sensor component must be replaced.

Equipment specs

  • Technology: Color Laser MFP
  • Performance: 33 ppm
  • Connectivity: USB, Ethernet
  • Consumable: Original bizhub toner
  • Usage: Professional office
  • Official drivers / firmware

Steps to follow

  1. 1

    Force shutdown

    Switch off the device immediately to prevent further heating.

  2. 2

    Check airflow

    Ensure the vents are not blocked by dust or other equipment.

  3. 3

    Cool down period

    Wait for 30 minutes before restarting the printer.

Frequently asked questions

The fuser unit has entered an overheating condition.

Yes, power it off to protect the internal fuser rollers.

Use authentic C3350i series toners only.

Ideally every 100k prints to ensure sensor accuracy.