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C3725 (bizhub C360i/C300i/C250i)

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Trouble typeC3725: Fusing abnormally high temperature detection (Main of the heating roller)
RankA
Trouble detection conditionDetected temperature of the heating roller temperature sensor (TEMS) goes beyond a given temperature for a given period of time consecutively.
Trouble isolation–
Relevant electrical parts• Fusing unit
• Heating roller temperature sensor (TEMS)
• CPU board (CPUB)
• Base board (BASEB)

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 connector between the fusing unit-relay CN95-BASEB CN4E for proper connection and correct as necessary.
  4. Check CPUB for proper installation and correct as necessary.
  5. Replace the fusing unit. (Part# AA2JR70300)
  6. Replace CPUB. (Part# AA2JH02N06)
  7. Replace BASEB. (Part# AA2JH02005)

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

L.3.9.5 (Link to the Field Service Manual)

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