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C3B03 (bizhub 558/458)

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Trouble typeC3B03: IH malfunction (monitor) (bizhub 558)
RankA
Trouble detection conditionThough the IH heater is OFF, mechanically, the ON status is detected. (Malfunction of IH heater operation)
Trouble isolation–
Relevant electrical parts• Fusing unit 
• IH coil (IHC) 
• IH power supply (IHPU) 
• IH magnetic erasing board (IHMEB) 
• NF board (NFB) 
• 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.
  4. Check the connector between MFPB CN13E-NFB CN3 for proper connection and correct as necessary.
  5. Check the connector between NFB CN2-IHPU CN1 for proper connection and correct as necessary.
  6. Check the connector between IHPU-IHC for proper connection and correct as necessary.
  7. Check the connector between IHC-IHMEB for proper connection and correct as necessary.
  8. Replace the fusing unit. (558 Part# A9E8030 / 458 Part# A79MR70200)
  9. Replace IHC. (558)(Part# A79KM40C00)
  10. Replace IHPU. (558)(Part# A8KNM40A02)
  11. Replace IHMEB. (558)(Part# A2XKH00A00)
  12. Replace MFPB. (558 Part# A9HGH02102 / 458 Part# A9HHH02102)
  13. Replace NFB. (Part# A795M40J00)

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

K.3.13.12 (Link to the Field Service Manual)

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