c-0502bizhub 250i

Konica Minolta bizhub 250i error C-0502: Fuser solution

The Konica Minolta bizhub 250i error C-0502 is a thermal failure indicating the fuser unit is not reaching operating temperature. Why is my Konica Minolta bizhub 250i showing error C-0502? This is commonly caused by heating element exhaustion or an internal sensor timing out.

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Common causes

  • 1Burned out fuser lamp.
  • 2Disconnected thermistor sensor.
  • 3Thermal control circuit fault.
  • 4Contamination on the fusing roller surface.

Solutions

Quick Diagnosis

This error occurs when the thermistor reports insufficient heat rise within the initial warm-up period.

Step-by-Step Solution

  1. Cool down: Turn off and let the unit cool completely.
  2. Check stability: Ensure your wall outlet is delivering stable power.
  3. Reboot: Power on after a short wait.
  4. Technician call: If the error persists, it is a hardware fault.

Prevention and Maintenance

Give the fuser time to cycle during heavy print workloads.

When to Call a Technician

Persistent C-0502 errors mean the fuser unit likely needs repair or replacement by a qualified engineer.

Technical Specifications