Shutter button doesnt autofocus

I have older version of Yashica Zoomtec 90 Automatic Focusing Power Zoom 38mm - 90mm camera. I put the film in the camera and started shooting but I realised that shutter button is loose and only reacts when its pressed all the way. Everything trough the viewfinder is in focus and lens motor doesnt make any sound before shooting. I got few more expositions before my film is done, so Im still not sure if AF doesnt work, but Im expecting out of focus images. I want to know if there is fix to this problem, and will try to open the camera and see if there are visible damage.

Thanks.