Happy hacking.
If you are trying to repair a broken Pi, the "Reduced Schematics" provided by the foundation are often not enough because they omit the specific capacitor/resistor values in the power sections. raspberry pi schematic diagram
When you open a file like the Raspberry Pi 4 reduced schematics , you’ll notice the board is divided into functional blocks: Architecture of Raspberry Pi - GeeksforGeeks Happy hacking
: As of late 2023, a full official schematic has not been released, though mechanical drawings and product briefs are available. raspberry pi schematic diagram