2.3 Check whether the positioning posts on both sides of the lens are aligned with the positioning holes of the middle frame, otherwise the assembly is not in place.
2.3 Check whether the positioning column on both sides of the lens is aligned to the middle frame positioning hole, otherwise the assembly is not in place.
2.3 check whether the locating columns on both sides of the lens are aligned with the locating holes of the middle frame, otherwise the assembly is not in place