How to reset a C4** fuser error on a Toshiba Copier

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

The fuser errors always start with C4.

Examples of fuser unit related service calls:

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 of time when the pressure roller temperature during ready status is higher than the 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.

To reset such an error, you will have to go to diagnostics or service mode as described in a previous blog.

Go to  FS Menu

Go to 08 SETTINGS MODE, then click “Next”, then click “Classic” on the right top corner.

Type 2002 then press the START (Green) BUTTON

Press number 0 then “OK” at the bottom of the screen.

Restart the Copier.

If the error persists, it means that the copier has a fuser problem that could be repaired on-site by a technical representative.

For more help please contact us.

NOTE: On older Toshiba copiers the procedure is different:

Go to 08 SETTINGS mode by holding number 0 and number 8 while Power-ON the Copier. Hold 0 and 8 until the printer makes a beep noise and some lights are on, then let go.

In 08 settings mode type 400 then press START button.

Type number 0 then press "Enter" or "Ok" on the bottom of the screen.

Restart the copier.

If the results are negative the fuser unit has a problem and needs to be repaired.