Named after the code 129NQ135 and filed as a schematic, this 113 KB PDF gives no laptop model, board number or revision. The pattern fits the numbering of high-current Schottky rectifier parts, so the document most likely covers one component with its ratings, characteristic curves and package outline. It opens in any PDF viewer. Technicians use such sheets to confirm a replacement can handle the required current and reverse voltage, so check the marking on the original part first.
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 @cyberlanelectonik. 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.