If you are looking at a schematic PDF or trying to understand how the board works, it is generally divided into these "Sheets" or functional blocks:
If you are looking for specific model diagrams, you can find the most recent official files on the Raspberry Pi Documentation portal . Official Schematic Availability raspberry pi schematic diagram
In this article, we will break down what a Raspberry Pi schematic diagram actually shows, where to find official versions, and how to navigate its key sections. If you are looking at a schematic PDF