Confidential
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4.8 Scanned-image Problems
4.8.1 Defective images
Fig. 2-11
4.8.2 Troubleshooting from image defect
Light
User Check
- Check if the contrast is set to "Light."
- Clean document cover glass or ADF glass.
- Clean the document pressure bar.
Step Cause Solution
1 White level correction data
failure
Carry out maintenance 55.
2 First side or second side CIS
unit defective
Replace the first side or second side CIS unit.
3 Main PCB defective Replace the main PCB ASSY.
Light
Scanning position failure
Dark
Completely blank
Straight vertical stripes
White vertical streaks
Colored over the whole page
Entire image is distorted
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