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C6751 (bizhub C658/C558/C458/C368/C308/C258)

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Trouble typeC6751: CCD gain adjustment failure
RankB
Trouble detection condition• The adjustment value is 0 or 255 during a CCD clamp adjustment.
• The peak value of the output data is 64 or less during a CCD gain adjustment.
Trouble isolationScanner
Relevant electrical parts• LED exposure unit
• CCD board (CCDB)
• MFP board (MFPB)

 Procedure

  1. Check the connector between CCDB CN3-MFPB CN1 for proper connection and correct as necessary. (bizhub C368/C308/C258)
  2. Check the connector between CCDB PJ3-MFPB CN9 for proper connection and correct as necessary. (bizhub C658/C558/C458)
  3. Check for possible extraneous light and correct as necessary.
  4. Clean the lens, mirrors, CCD surface, and shading sheet if dirty.
  5. Correct reflective mirror of the scanner if faulty, or change scanner mirror.
  6. Replace CCDB. (bizhub C368/C308/C258 (Part# A7PUR75200) / bizhub C658/C558/C458 (Part# A79JR72700))
  7. 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.3.18.8 (Link to the Field Service Manual)

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