6. Appendix: Troubleshooting Guide
Scanning
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No image (blank copy/print, or no image with only vertical black
lines on the output)
Possible causes:
1.
• Connection problem between CIS and IPU.
• CIS defective
No image (solid black copy/print, or no image with only vertical
white lines on the output)
Possible causes:
2.
• Connection problem between CIS and IPU.
• CIS defective
Light image
Possible causes:
3.
• Low CIS output
• IPU board defective