C3726 (bizhub C368/C308/C258)

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Trouble typeC3726: Fusing abnormally high temperature detection (Center of the heating roller)
RankA
Trouble detection conditionDetected temperature of the heating roller thermistor/2 (TH2) goes beyond a given temperature for a given period of time consecutively.
Trouble isolation–
Relevant electrical parts• Fusing unit 
• Heating roller thermistor/2 (TH2) 
• MFP board (MFPB)

 Procedure

  1. Check the fusing unit for correct installation (whether it is secured in position).
  2. Check the open/close operation of the right door.
  3. Check the fusing unit and MFPB for proper connection and correct or change as necessary.
  4. Replace the fusing unit. (Part# A161R71888)
  5. Replace MFPB. (Part# A7PUH02123)

Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.

K.3.13.5 (Link to the Field Service Manual)