Another 900 KB PDF copy of the Quanta R23 laptop board schematic, likely a duplicate of the other files bearing that project code. No revision letter, brand or model number appears in the name. The diagrams are useful for finding which MOSFET or controller feeds a dead rail, locating fuses on the input line, and reading part designators when hunting a short. Quanta usually marks the PCB with a DAR23 style number near the edge, so confirm it and the revision against the title block inside the document.
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.