C4091 (bizhub C368/C308/C258)

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 Contents

Trouble typeC4091: I/F communication error
RankC
Trouble detection conditionCommunication between the controller control unit and the engine control unit is not completed even after the lapse of a predetermined period of time.
Trouble isolation–
Relevant electrical partsMFP board (MFPB)

 Procedure

  1. Reboot the machine.
  2. Replace MFPB. (Part# A7PUH02123)

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)