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C40A1 (bizhub 558/458)

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Trouble typeC40A1: Mechanical controller sub-CPU communication errorC40A2: Mechanical controller PF communication data error
RankC
Trouble detection conditionA CPU communication error is detected.
Trouble isolation–
Relevant electrical partsMFP board (MFPB)

 Procedure

  1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch.
  2. Rewrite the firmware.
  3. Replace MFPB. (558 Part# A9HGH02102 / 458 Part# A9HHH02102)

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

K.3.15.1 (Link to the Field Service Manual)

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