C6751 (bizhub C554/C454)
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Contents
| Trouble type | CCD clamp/gain adjustment failure |
| Trouble code | C6751 |
| Rank | B |
| Detection timing | 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 (LU201) -CCD board (CCDB) -MFP board (MFPB) |
(2)Procedure
| Step | Action | Control signal | Location of electrical components |
| 1 | Check the connector between CCDB PJ3-MFPB PJ01 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, or change scanner mirror. | – | – |
| 5 | Replace CCDB (Part# A161R72100) | – | – |
| 6 | Replace MFPB (Part# A2XKH02004) | – | – |
- Link to the layout drawings for related parts by each trouble code (S.111. C6751)
K3.11.6 (Link to the Field Service Manual)