Schematic of the Quanta R23 laptop mainboard in a 900 KB PDF; the repeated (2) suffix shows it is a duplicate copy. The name gives no revision, brand or chipset, so identify the board by the R23 code that Quanta normally prints within the DA0 board number. Quanta acts as an ODM, building boards for several laptop brands. These pages help a technician trace rails from the charger onward, check regulator outputs, find test points and isolate shorts. Open it in any PDF reader and compare the PCB revision with the one on the title block.
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.