Place the lens mount onto the fixed barrel, lining it up with the screw holes.

Screw in the four Phillips #00 screws for the lens mount.

Snap the electrical connector into place. The connector has a plastic piece that sticks out the side that will fit into one of the small holes in the lens mount.

Screw the two JIS #000 screws through the inner part of the lens mount and into the connector.

Snap the back cover into place.

Screw in the remaining three JIS #000 screws into the side of the lens mount.