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C6751 (bizhub C754/C654)
Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.
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 (LA201) -CCD board (CCDB) -MFP board (MFPB) |
(2)Procedure
| Step | Action | Control signal | Location of electrical components |
| 1 | Correct the harness connection between CCDB and MFPB 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 CCDB (Part# A5C1H00E01Old or Part# A161H00U01) | – | – |
| 6 | Replace MFPB (Part# A2XKH02004) | – | – |
- Link to the layout drawings for related parts by each trouble code (S.95. C6751)
K.3.11.6 (Link to the Field Service Manual)