Confidential
2-83
4.8 Scanned-image Problems
4.8.1 Defective images
4.8.2 Troubleshooting from image defect
Light
Light Scanning position failure Dark
Completely blank Straight vertical stripes White vertical
streaks
Colored over the whole page Entire image is
distorted
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.