Troubleshooting Fuser Errors on Toshiba Machines: Your Guide to Solutions

Understanding Fuser Errors

Fuser errors on Toshiba machines typically show as codes: C411, C412, C443, C444, C445, C446, C447, C448, C449 - C4 to C4E2. All fuser errors start with C4.

These errors can disrupt your workflow. Knowing how to identify and troubleshoot them can save time and reduce downtime.

Common Fuser Unit Related Service Calls

Here are some common fuser error codes and their meanings:

• C411: Thermistor or IH abnormality at power-on.

• C412: Thermistor/IH abnormality at power-on.

• C443: IH abnormality after abnormality judgment (not reaching intermediate temperature).

• C445: IH abnormality after abnormality judgment (pre-running end temperature abnormality).

• C446: IH abnormality after abnormality judgment (pre-running end temperature abnormality).

• C447: IH abnormality after abnormality judgment (temperature abnormality at ready status).

• C448: IH continuous lighting abnormality: IH lights continuously for a certain period when the pressure roller temperature during ready status is higher than specified.

• C449: IH abnormality after abnormality judgment (high temperature abnormality).

• C461: Pressure roller heater 40°C detection (Not determined).

• C462: Pressure roller heater 40°C detection (Determined).

• C464: Pressure roller thermistor temperature difference.

• C467: Pressure roller thermistor abnormality after entering ready status (temperature abnormality at ready status).

• C468: Pressure roller thermistor abnormality after entering ready status (overheating).

• C471: IH board initialization abnormality.

• C472: Power supply abnormality.

• C473: Surge pressure detection / power and voltage upper limit abnormality.

• C474: Power and voltage lower limit abnormality.

• C480: IGBT high temperature abnormality.

• C481: IH drive circuit abnormality.

• C490: IH circuit abnormality / IH coil abnormality.

• C4B0: Fuser unit counter abnormality.

• C4B1: Fuser unit voltage judgment abnormality.

• C4E0: Fuser unit releasing operation abnormality - Though the pressure roller is released, its position cannot be detected.

• C4E1: Fuser unit contacting operation abnormality - Though the pressure roller is contacted, its position cannot be detected.

• C4E2: Fuser belt rotation detection sensor abnormality - The fuser belt does not rotate or incorrectly rotates.

  
  

Resetting Fuser Errors

To reset a fuser error, follow these steps to access diagnostics or service mode:

1. Go to the FS Menu.

2. Select 08 SETTINGS MODE, then click “Next”, and click “Classic” in the top right corner.

3. Type 2002 and press the START (Green) BUTTON.

4. Press 0, then click “OK” at the bottom of the screen.

5. Restart the copier.

   
   

If the error persists, the copier has a fuser problem that requires on-site repair by a technical representative.

Special Note for Older Toshiba Copiers

For older Toshiba copiers, the procedure is slightly different:

1. Go to 08 SETTINGS mode by holding 0 and 8 while powering on the copier. Hold these buttons until you hear a beep and see some lights turn on, then release.

2. In 08 settings mode, type 400 and press the START button.

3. Type 0 and press "Enter" or "OK" at the bottom of the screen.

4. Restart the copier.

   
   

If the results are negative, the fuser unit has a problem and needs repair.

Conclusion

Understanding fuser errors is crucial for maintaining productivity. By following the steps outlined above, we can troubleshoot and resolve these issues effectively. If you need further assistance, please contact us.

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