Dismantling a Epson V33 scanner

Sometimes the underside of the glass of a flat-bed scanner gets dirty. Here follow instructions for how to clean it on a Epson V33 scanner.

Cleaning the glass & mirrors
Clean the glass with a non-abrasive cloth. Methylated alcohol is a good solvent to clean off any smudges as it will evaporate completely.

The light and mirror assembly can also get dirty, and can be cleaned with a small microfiber cloth.

A test scan can help highlight dirty areas. Skew colour levels far up to see the differences, for example:

Re-assembly
Putting the scanner back together is the reverse of the above steps.