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C6751 (bizhub C287/C227)

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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 unit
-CCD board (CCDB)
-MFP board (MFPB)

 Procedure

  1. Check the connector between CCDB PJ1-MFPB CN7 for proper connection and correct as necessary.
  2. Check for possible extraneous light and correct as necessary.
  3. Clean the lens, mirrors, CCD surface, and shading sheet if dirty.
  4. Correct reflective mirror of the scanner if faulty.
  5. Replace the CCD unit. (Part# A890R70033Old or A890R70300)
  6. Replace MFPB. (Part# A797H02118)

K.3.13.3 (Link to the Field Service Manual)

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