Hi Sam,
I tried to removed the Controls and Text objects (Title Heading) on the top of the dashboard still the same. But when I tried to decrease the size of the graph it can print up to 7 graphs only. So, I tried to added two more Sections, first Section includes the control and others objects text, 7 graphs etc., 2nd Section has 4 graphs and 3rd Section has 5 graphs and they were successfully printed to pdf but with 5 pages. 3 pages for 3 Sections and 2 pages for filters, so 1 section equals to 1 page. However, the client's requirement is to print the 16 graphs on 1 page.
Best Regards,
Carrot17