My first projector was a 1020, which may be the same unit. It said "high resolution 900" on the top of the chassis, but I never understood where the 900 came from - it certainly would not resolve 900 lines or anything.
I got mine for free from a friend who's dad brought it home from work. They couldn't get it to 'work' but I was able to set it up pretty easily. It had a bunch of resistors to set the convergence.
I used it from '94 till '99 when I upgraded to a D50. At the time it was fine, had a better picture than any other 'big screen' tv I saw and never had any problems. I built RGB video adapter cables for the PS2 and Xbox that were kind of fun projects and they made the games look really good - it still was 480i but was way way better on RGBHV than composite.
These days, I wouldn't think it would be worth anyone's while to bother with it. Video only is pretty sad.