Scanner related trouble

PhenomenonImage
Banding during scan or copy.

Paper feed failure during scan or copy.---
Scanned image is skewed.---
Joins between CIS Modules are misaligned.

Part or all of an image cannot be read.

Scanned or copied image colors are not even.

Scanned images are faint.

Frequent paper jams during scan or copy.---
Paper folding during scan or copy.---