If you make it simple, all you need to do is have it be yes you can if there is at least one instance where it could work. So your question is too vague, if you want something that can make a hole in dirt or build a car you have a very different concept. And if you want something actually functional it will need a computer and if you can just slot in a compact system on a chip but have it be otherwise self assembling with assuming it’s in a warehouse full of parts then the answer is yes. But you’re really just talking about can you have a set of equipment bundled together and the answer is petty much always that having special dedicated equipment in designated areas works better with assembly line production in a full scale factory. Sadly the point of a entirely self replicating device is really just the romantic aspect of pure efficency. But it’s beaten as always by boring economic factors.