Epson 1600 - Manual (Page 80)

4-6 Using Your Scanner
R4C0910
Rev. C
A5 size USING.FM
1/12/00 Pass 3
L Proof Sign-off:
SEI Y.Takasaki M.Fujimori
M.Fujimori
SEI M.Kauppi
Removing the Cover for Thick or Large Documents
Carefully lift straight up on the back of the document cover.
Note:
When scanning with the cover removed, do not leave any area of the
document table exposed to prevent interference from external light.
When you are finished scanning, reattach the document cover by
pushing straight down on the back until it clicks into place.
Hold the back of the document
cover and lift straight up.