Essentially, the camera becomes an FG-20 or an FE with a built-in winder and flash when a manual focus Nikkor is mounted that doesn't have the chip in it. Just did that a couple weeks ago on an N6006 (same camera), when I mounted my 85f1.8 Nikkor to it.
And oddly, there is an F601M (N6000) that lacks autofocus, but still requires AF lenses (or one of the two or three rare AI-P lenses with contacts) to use matrix metering and P and S mode. I never quite saw the point in it since one could buy the F601 with AF and simply disable AF.