Quanta-designed laptop motherboard schematic for the VM9M project at revision F3B, supplied as a 1.14 MB PDF. The file name gives no laptop brand or model, only the Quanta project code, so identify the target machine by the code silkscreened on the board, which Quanta usually prints in a DA...MB form. Technicians use such diagrams to follow power rails from the adapter input through the charger and regulators, to check signal paths and to locate components when hunting a short. Revision matters, so compare it with the PCB marking.
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 @schematicslaptop. Enginerys does not host this file.
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The same file was posted more than once. If one link is dead, try the next.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.