2 hours ago I unboxed a brand new Canon LIDE 400.

I started to test it, but I see stripes on the left side for every scan. See following pictures:

1) ScanGear preview - white paper as background

2) Result of the scan, white bright paper as a background + postcard - there are visible stripes over the postcard as well

Is it repairable, is it a defective piece? Should I ask for a replacement? What's the cause?

Thank you.