Usually the first page. It shows how the CPU, GPU, and Chipset (PCH) communicate.
To successfully repair an HP Pavilion dv6 at the component level, you often need both: the schematic to understand the fault, and the board view to find the tiny component on the board. hp pavilion dv6 schematic diagram
The HP Pavilion dv6 may be over a decade old, but millions are still in use as secondary laptops, student machines, or Linux testbeds. As these devices age, their capacitors dry out, MOSFETs short, and solder joints crack. A replacement motherboard might cost more than the laptop is worth. Usually the first page
You replace the RAM, reflow the GPU, and replace the LCD. It still fails. their capacitors dry out