c-0500bizhub 306

Konica Minolta bizhub 306 Error C-0500: Solution

The Konica Minolta bizhub 306 error C-0500 signals a critical failure during the fuser warming phase. The unit doesn't detect heat buildup correctly, triggering a safety shut-off. This is typical for high-volume units experiencing power or sensor issues.

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Common causes

  • 1Lamp burnout: Heating element is dead.
  • 2Wiring fault: Open circuit between board and fuser.
  • 3Thermistor: Failed sensor sending no temperature data.
  • 4Low voltage: Insufficient power for heating.

Solutions

Diagnosis

This error appears immediately after power-on. If the motor clicks but the error remains, the thermal reading is compromised.

Troubleshooting steps

  1. Use the main switch to shut down and unplug.
  2. Allow 20 minutes for physical cooling.
  3. Connect directly to a wall power source.
  4. Power on and wait for the warm-up cycle.

Maintenance

Avoid daisy-chained power strips; these units require dedicated, stable voltage. Professional preventative maintenance every 100k pages is mandatory.

When to call a technician

If cooling down and restarting fails, the heating element is likely burnt out and requires professional replacement.

Technical specifications

  • Technology: Monochrome laser copier.
  • Speed/performance: 30 ppm.
  • Connectivity: USB, Ethernet.
  • Feeding capacity: 1,350 sheets.
  • Compatible supplies: TN323 toner.
  • Recommended use: Corporate office.
  • Official drivers/firmware

Steps to follow

  1. 1

    Power down

    Switch off from the main breaker and let it cool for 20 minutes.

  2. 2

    Check power

    Ensure the device is connected directly to a wall socket, not a power strip.

  3. 3

    System restart

    Power on to initiate the thermal sensor pre-heat sequence.

Frequently asked questions

The C-0500 code signifies that the fuser unit fails to reach operating temperature during startup.

Yes, the unit locks for safety to prevent damage from power spikes.

Always follow system alerts for drum and toner replacement to maintain optimal efficiency.

Use a proper voltage regulator if your facility has frequent power fluctuations.

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