Why is the image from the projector blurred and out of focus?

Root Folder > White Boards > Promethean Board
 
Why is the image from the projector blurred and out of focus?

Check to see if the lens cap has been removed from the projector. The lens may need to be cleaned. Use a dry, soft, lint-free cloth such as an eyeglass or camera lens cloth. NEVER use a paper towel to clean the lens, as paper may scratch it.