C6755 (bizhub C754/C654)
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Contents
| Trouble type | CIS gain adjustment failure |
| Trouble code | C6755 |
| Rank | B |
| Detection timing | 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) -DF power supply (DFPU) -MFP board (MFPB) |
(2)Procedure
| Step | Action | Control signal | Location of electrical components |
| 1 | Correct the harness connection between CIS and DSIPB if faulty. | – | – |
| 2 | Correct the harness connection between CIS and DFPU if faulty. | – | – |
| 3 | Check for possible extraneous light and correct as necessary. | – | – |
| 4 | Clean the back side reading glass and the shading sheet if dirty. | – | – |
| 5 | Replace CIS (Part# A2X0R70M00) | – | – |
| 6 | Replace DSIPB (Part# A161H02A00) | – | – |
| 7 | Replace DFPU (Part# A3CKH00200) | – | – |
| 8 | Replace MFPB (Part# A2XKH02004) | – | – |
- Link to the layout drawings for related parts by each trouble code (S.97. C6754, C6755)
K.3.11.9 (Link to the Field Service Manual)