C3B02 (bizhub C759/C659)

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Trouble typeC3B02:
-IH malfunction (CPU)
-IH power supply for incorrect marketing area (The IH power supply for incorrect marketing area is installed)
RankA
Trouble detection conditionA failure in communication with the fusing CPU continues for a predetermined period of time.
Trouble isolation–
Relevant electrical parts-IH power supply unit (IHPU)
-Noise filter (NF1)
-MFP board (MFPB)

 Procedure

  1. Check the open/close operation of the upper right door.
  2. Check the connector between NF1 CN2-IHPU CN1 for proper connection and correct as necessary.
  3. Check the connector between IHPU CN6-MFPB CN26E for proper connection and correct as necessary.
  4. Check the connector between NF1 CN3-MFPB CN29E for proper connection and correct as necessary.
  5. Check the connector between CN1AC-NF1 CN1 for proper connection and correct as necessary.
  6. Replace IHPU. (Part# A8KNM40A02)
  7. MFPB F2E or F21E conduction check
  8. Replace MFPB. (Part# A8JEH02002)

L.3.10.15 (Link to the Field Service Manual)