Thanks for offering help, but being able to jump to a page is not the main problem.
I think every PDF reader probably has that kind of feature. In preview it's "go to page" / option-cmd-g
The problem is not knowing what page to jump to. Without a working table of contents in the sidebar, you need to keep coming back to the page where it was rendered.
I considered using go to page as a workaround, and found that if I jump to page 1 (which is the minimum in Preview) it takes me to Chapter 1, so I can't even jump to the rendered ToC
Maybe I have high standards, but I find this unacceptable for an expensive professional device produced by a fairly big company. It shouldn't be that difficult to fix. It's an essential part of writing a decent manual, and many years have passed since this manual came out.