C8401 (bizhub 558/458)

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Trouble typeC8401: Data flash failure
RankC
Trouble detection conditionData flash does not access normally.
Trouble isolation–
Relevant electrical partsDF control board (DFCB)

 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. Check the DFCB connector for proper connection and correct as necessary.
  3. Rewrite the firmware.
  4. Replace DFCB. (Part# A85GPP0M00)

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

K.3.21.4 (Link to the Field Service Manual)