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C6754,C6755 (bizhub 950i/850i)
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Contents
| Trouble type | – C6754: CIS clamp adjustment failure – C6755: CIS gain adjustment failure |
| Rank | B |
| Trouble detection condition | – C6754: After the gain adjustment is performed at the start-up, the CIS clamp adjustment value is too high or too low. – C6755: 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) – CIS power supply (CISPU) – CPU board (CPUB) – Base board (BASEB) |
Procedure
- Check the connector between CIS CN2-BASEB CN5 for proper connection and correct as necessary.
- Check CPUB for proper installation and correct as necessary.
- Correct the harness connection between CIS CN1-CISPU CN2 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.
- Replace CISPU.
- Replace CPUB.
- Replace BASEB.