Positivo schematic in PDF, 2.06 MB, labelled with the code AG31AP. The file name offers no model name, board revision or chipset details, so the AG31AP marking on the board itself is the only reliable way to confirm a match. Once confirmed, the drawing helps trace power sequencing, find decoupling and protection parts near a short, and follow data lines between the main controllers and connectors. Searching the PDF for a net name or reference designator is usually the quickest way to navigate between its pages.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @abgm_manutencao_esquemas. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.