Schematic in PDF format for the Quanta SA8 motherboard, revision 1A, roughly 838 KB in size. Quanta designs and manufactures laptop boards for many brands, marking them with short project codes like SA8 on the PCB. The diagram helps trace voltage rails, check the charging circuit and EC connections, and find where a shorted line leads when a board will not power on. Open it in a standard PDF reader and search net labels. Make sure the board code and revision on your PCB match SA8 rev 1A, since component placement can change between revisions.
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.