Description: Developer at transfer/separator adjustment. This might mean a developer leak or shorted corona.
Code: C41
Description: Fuser thermistor or low temperature.
Code: C43
Description: Fuser problem after warm-up.
Code: C44
Description: Fuser problem after warm-up.
Code: C45
Description: Fuser sub-thermistor open. User problems. Reset required. Turn off power. Hold "0" & "8" keys while turning power on. Then press "8". Then press "9". Then press "print". You will read "3" in the display. Using the # keys, press "0" & "9" at the same time.