Home Theater Sony DAV-DZ650 Broken does not want to read dvd or vcd disc is usually a problem with the motor disc driver. But in this case the problem with optics is already weak. For optics that are already weak try to trim the optics. For DVDs, there are usually 2 vr settings. If you are confused which parts are set, try adjusting them one by one. Before the optical settings, first pay attention to the initial position of the vr so if it's already trimmed there is still no change, just return the original position and continue to trim the vr next to it. To re-trim, I usually position the vr stuck to the left, then rotate it a little to the right, then try it if there is no change in sliding, either to a little, and so on.