A schematic diagram for Lenovo hardware (board LA-8262P). Shared as “COMPAL LA-8262P R10 (THINKPAD EDGE S430) PDF.pdf” — a .pdf file, 785 KB.
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 @alischematics. 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.