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C6903 (bizhub C658/C558/C458/C368/C308/C258)

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Trouble typeC6903: DSC board bus check NG1-2 (When SC-508 is installed)
RankC
Trouble detection conditionWhen DSC bus check (front side) detects an error.
Trouble isolation–
Relevant electrical parts• DSC board/1 (DSCB/1: SC-508) 
• MFP board (MFPB)

 Procedure

  1. Correct the harness connection of DSCB/1 if faulty.
  2. Replace DSCB/1. (Replace DSCB/1 SC-508)
  3. Replace MFPB. (bizhub C368/C308/C258 (Part# A7PUH02123) / bizhub C658/C558/C458(C458 Part# A79MH02102 / C558 or C658 Part # A79JH02102))

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

K.3.18.15 (Link to the Field Service Manual)

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