A Toshiba TLP-410 projector was donated to our school, but we did not receive a manual. We can turn it on, but everything is blurry, or out of focus. Is there a remote control that perhaps we did not receive that is used to focus the projectur image ? Thanks for any help you can provide to us. That's why we're trying to get hold of a manual to see how the projector works. Everything is too blurry to read the menu