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C40A3 (bizhub C759/C659)

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Trouble typeC40A3: Mechanical controller PF transmission timeout
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. MFPB F2E conduction check
  4. Replace MFPB. (Part# A8JEH02002)

L.3.11.2 (Link to the Field Service Manual)

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