Epson Perfection V500 - Manual (Page 33)

Note:
Always keep the document table clean.
Do not leave photos on the document table for an extended period of time
as they may stick to the glass.
To scan your document or photo, see Starting a Scan With the Scanner Buttons .
Placing Large or Thick Documents
When you scan a large or thick document, you can remove the scanner cover.
Turn off the scanner using its power switch.
Disconnect the cover cable.