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C6751 (bizhub C750i)
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Contents
Trouble type | C6751: CCD clamp/gain adjustment failure |
Rank | B |
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 isolation | Scanner |
Relevant electrical parts | -LED exposure unit -CCD unit -CPU board (CPUB) -Base board (BASEB) |
Procedure
- Check the connector between CCDB CN2-BASEB CN6 for proper connection and correct as necessary.
- Check CPUB for proper installation and correct as necessary.
- Check for possible extraneous light and correct as necessary.
- Clean the lens, mirrors, CCD surface, and shading sheet if dirty.
- Correct reflective mirror of the scanner if faulty, or change scanner mirror. (Part# A0ED271200)
- Replace the CCD unit. (Part# AA7NR72500)
- Replace CPUB. (Part# ACKNH02P03)
- Replace BASEB. (Part# ACKNH02101)