Sir
Use a string or twine measured with a knot exactly in the middle and long enough to be taped to either side of the screen so the knot reaches the green lens; this measures the center effectively. Then pivot the entire machine to center the image on the screen. There is no harm in using the phosphor close to the edge. Good luck with your setup, and remember that your 8500 has on-screen setup assistance available in the Help menu.
Use a string or twine measured with a knot exactly in the middle and long enough to be taped to either side of the screen so the knot reaches the green lens; this measures the center effectively. Then pivot the entire machine to center the image on the screen. There is no harm in using the phosphor close to the edge. Good luck with your setup, and remember that your 8500 has on-screen setup assistance available in the Help menu.
