It could take up to 15 seconds for the “Loading…” icon to disappear and for the plugin to load your Optoma UHD51A Projector Manual.
If you’re on high speed internet it shouldn’t take to long though. Meanwhile, if you need a specific page out of this manual printed out, you can check out our PDF File Management page where we share such tips and tricks, as well as our Software category in case you need a new tool for your PDF needs.