2-93
Confidential
4.12 Troubleshooting for Image Defects
4.12.1 Defect examples
Fig. 2-15
4.12.2 Troubleshooting according to image defect
îš„ Light
<User Check>
- Check that the contrast setting is not too light.
- Clean the document glass or the ADF glass.
- Clean the first side document hold or second side document hold.
Step Cause Remedy
1 Incorrect white level correction data Execute function code 55.
2
First side CIS unit or second side
CIS unit failure
Replace the first side CIS unit or second
side CIS unit.
3 Main PCB failure Replace the main PCB ASSY.
Light
Vertical streaks
Vertical streaks
Completely blank
Faulty registration
Dark or
bluish white
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