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C392B (bizhub 658e/558e/458e)

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Trouble typeC392B: Fusing sensor wire breaks detection (difference of temperature)
RankA
Trouble detection conditionThe difference between the temperature corrected by the heating roller thermistor/1 (TH1) and the temperature detected by the heating roller thermistor/2 (TH2) exceeds a predetermined value.
Trouble isolation–
Relevant electrical parts• Fusing unit
• Heating roller thermistor/1 (TH1)
• 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-MFPB CN22E for proper connection and correct or change as necessary. (bizhub 658e/558e)
  4. Check the fusing unit-MFPB CN12E for proper connection and correct or change as necessary. (bizhub 458e)
  5. Replace the fusing unit. (bizhub 658e/558e Part# A79JR71077 / bizhub 458e Part# AA6UR70400)
  6. Replace MFPB. (658e/558e Part# AA6RH02103 / 458e Part# AA6UH02101)

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

L.3.12.11 (Link to the Field Service Manual)

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