I think it is pretty simple to remove. I am working from memory, but I had one of these long ago. There are philips head screws behind the grille, then it swings up and out slightly to lift it off in an upward direction. It is pretty obvious once you start looking at it. Nothing requires much force on these.
For a cleaner, I use a mix of 1 oz pure isopropanol and 1 oz Kodak Photoflo in a quart of distilled water. The alcohol is good for the static and as a drying agent and the photoflo is a surfactant. I have tested this solution on many lenses, screens, and mirrors and have found it to be completely safe for everything I tried, and this includes everything in your set. Some will say that the alcohol is a problem, but I have tested it by leaving it on surfaces extensively and found it safe and effective. The only thing that I have not tested on are some of the newer coatings on the PDP and LCD panels.
It is very important to dry the screen totally to avoid spotting. Have lots of lint free cloths. I use well luandered cotton diapers and microfiber cloths. Do not leave any dust nor oil nor smudges nor streaks as they will be visible, particularly between the lenses.