Hi,
The scanner is defective so you must replace it.
Gabi
Hello there,
I am not sure if you have tried this yet, but I found this article with some steps that may help solve this issue.
Hello,
I recently got initially only on the ADF scans a black and with some colors line and now I started to have this also in the normal scan on the glass. I have already cleaned the glass with alcohol. Do you have any ideas why this happens? You can see what is happening after I scanned a blank A4 page:
Scan from the ADF
Scan directly on the glass