Yes, it has program, aperture priority, shutter priority and manual modes.The aperture and shutter settings should be visible on both the right hand top plate LCD panel, and also in an illuminate LED panel below the image in the viewfinder.
From memory (and I might be wrong) the Dynax 4 (Maxxum 4 in North America, Dynax 3 in Asia Pacific) light meter simply indicated a plus or minus symbol to indicate over or under exposure for the selected combination of shutter and aperture. The viewfinder display would have a steady dot to confirm confirm focus follwed by the chosen shutter speed and aperture setting.
I cannot find a link to anything other than a
German manual, but the diagrams and a bit of mental application will go a long way if you don't understand German.
Note that if your camera's electronics have failed then there's nothing you can realistically do other than to replace it. Spares are not available and as a consumer level model it was never really intended to be serviced or repaired.