There's a screw in the center of the face plate that needs to come off, and you gently pry it open with a screw driver (
manual suggest using the zipper foot and insert it into the top slot of the face plate). I don't know this model at all, there's not much further details. I would not call in vintage though, even if might be 10 or 20 years old. Plastic covers on these machines can be cumbersome to get off, but its possible. Find a spot and use a plastic tool in the joints. The joints in the encasing are usually click-in-place, a few paces there might be screws involved. It's not a model you should spend a lot of time and money on, but an easy DIY cleaning and fix-up can be worth it. There might be gears or joints inside you can lubricate, but it's meant to be done during a service.