C6903 (bizhub 558/458)

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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. (Part# N/A)
  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.3.19.11 (Link to the Field Service Manual)