C6912 (bizhub 558/458)

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Trouble typeC6912: DSC board bus check NG2-1 (When SC-508 is installed)
RankC
Trouble detection conditionWhen DSC bus check (back side) detects an error.
Trouble isolation–
Relevant electrical parts• DSC board 2 (DSCB/2; SC-508) 
• Dual scan image processing board (DSIPB) 
• MFP board (MFPB)

 Procedure

  1. Correct the harness connection of DSCB/2 if faulty.
  2. Correct the harness connection of DSIPB if faulty.
  3. Replace DSCB/2. (Part# N/A)
  4. Replace DSIPB. (Part# A7PUH02A01)
  5. 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.3.19.12 (Link to the Field Service Manual)