Introduction
The Nikon 1 J3 is designed to have a user replaceable lens. Here is how to replace it.
Conclusion
To reassemble your device, follow these instructions in reverse order.
One comment
Changing the lens of a mirrorless camera is not worty of a tutorial, it should be removed.
A real repair tutorial should cover repairing the standard 10-30 lens, which is no longer repaired by Nikon or third-party workshops.
Laurent -