Schematic document titled as the PCB diagram for an NP P40 notebook, supplied as an 18.8 MB PDF. The NP prefix follows Samsung's notebook model naming, but no board number, revision or chipset is given in the name. A diagram like this lets a repair tech follow the power sequence, identify the regulators feeding each rail, and trace signals between the main chips and connectors. Check that the board markings on the PCB agree with the document before using it to measure or replace parts.
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 @smschematics. 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.