Epson GT-9600 User Manual page 40

When you are finished scanning, reattach the document cover by
pushing straight down on the back until it clicks into place.
Caution:
c
Make sure both of the notches in the cover's hinges are directly
above the clips on the scanner before pushing the cover down into
place. Improperly aligned notches can damage the cover.
2-8
Using Your Scanner