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S-1 (bizhub C750i)

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Malfunction typeCCD gain adjustment failure
Malfunction codeS-1
Malfunction detection timingIt is detected that the CCD clamp gain adjustment value is faulty.
Relevant parts-LED exposure unit
-CCD unit
-Scanner drive board (SCDB)
-Base board (BASEB)

Procedure

  1. Correct the connector connection between CCDB CN2-BASEB CN6 if faulty.
  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, or change scanner mirror.
  5. Replace the CCD unit. (Part# AA7NR72500)
  6. Replace SCDB. (Part# AA7NH01A00)
  7. Replace BASEB. (Part# ACKNH02101)

(Link to the Field Service Manual)

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