Epson 4SLC2-50 - Manual (Page 69)

8. Carefully detach the keyboard by lifting upon the front and
sides of the keyboard. Then pull it toward you.
9. Turn the keyboard upside down by tilting the front of the
keyboard up and back toward the LCD. Carefully set the
keyboard on top of the computer. Be careful not to strain or
twist the keyboard cables.
WARNING
Be sure to ground yourself every time you remove the
keyboard, If you are not properly grounded, you could
generate an electric shock that could damage one of the
computer’s components when you touch it.
4-12 Connecting Optional Devices