C6755 (bizhub C4050i/C3350i)
Contents
| Trouble type | C6755: CIS gain adjustment failure |
| Rank | B |
| Trouble detection condition | 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 | • DF CIS module (DF CIS) • CPU board (CPUB) • Base board (BASEB) |
Procedure
- Check CPUB for proper installation and correct as necessary.
- Check for possible extraneous light and correct as necessary.
- Clean the back side reading glass and the shading sheet if dirty.
- Replace the DF CIS module assy. (Part# AAJNR70900)
- Replace CPUB. (Part# A93EH01004)
- Replace BASEB. (Part# A93EH02007)
Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.
L.3.11.8 (Link to the Field Service Manual)