C3B08 (bizhub 558/458)

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Trouble typeC3B08: IH input voltage error (bizhub 558)
RankB
Trouble detection condition• While the IH heater was ON, input power was at the high voltage detection value or over for more than the predetermined period of time.
• While the IH heater was ON, input voltage was at the low power detection value or under for more than the predetermined period of time.
Trouble isolation–
Relevant electrical parts• Fusing unit 
• IH coil (IHC) 
• IH power supply (IHPU) 
• NF board (NFB) 
• MFP board (MFPB)

 Procedure

  1. Check the fusing unit for correct installation (whether it is secured in position).
  2. Check the fusing unit-MFPB CN22E for proper connection and correct or change as necessary.
  3. Check the connector between NFB CN2-IHPU CN1 for proper connection and correct as necessary.
  4. Check the connector between IHPU CN8-MFPB CN3E for proper connection and correct as necessary.
  5. Check the marketing area of the fusing unit. If the marketing area is incorrect, replace the fusing unit for proper marketing area.
  6. Check the marketing area of IHPU. If the marketing area is incorrect, replace IHPU for proper marketing area.
  7. Replace IHC. (558)(Part# A79KM40C00)
  8. Replace IHPU. (558)(Part# A8KNM40A02)
  9. Replace MFPB. (558 Part# A9HGH02102 / 458 Part# A9HHH02102)
  10. Replace NFB. (558)(Part# A795M40J00)

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

K.3.13.13 (Link to the Field Service Manual)