Are there more than one artboards? Is the artwork on the artboard? What's in the file? Are the layers set to template?
Yes there are 3 artboards. Yes the art work is on all three. It is for a booth. When saving out, artboards was checked and numbers were chosen. There is a large background image spanning the 3, some text and a couple photographs. No the layers are not set as template.
where are you viewing the pdf, in Illustrator, Acrobat, another program?
are the layers printable?