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C6755 (bizhub C368/C308/C258)
Contents
| Trouble type | C6755: CIS gain adjustment failure (When DF-704 is installed) |
| Rank | B |
| Trouble detection condition | After the gain adjustment is performed at the start-up, the peak value of the output data is lower than a given value. |
| Trouble isolation | Scanner |
| Relevant electrical parts | • CIS module (CIS) • Dual scan image processing board (DSIPB) • CIS power supply (CISPU) • MFP board (MFPB) |
Procedure
- Correct the harness connection between CIS and DSIPB if faulty.
- Correct the harness connection between CIS J222-CISPU J2 if faulty.
- Check for possible extraneous light and correct as necessary.
- Clean the back side reading glass and the shading sheet if dirty.
- Replace CIS. (Part# A85GM70001)
- Replace DSIPB. (Part# A7PUH02123)
- Replace CISPU. (Part# A3CEPP4Y00)
- Replace MFPB. (Part# A7PUH02123)
Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.
K.3.18.12 (Link to the Field Service Manual)