Schematic for the Lenovo Y410, with the file name stating only the model, without a board number, manufacturer code or revision. Check the title block inside and match it with the motherboard markings before measuring. Such a diagram is used to trace power rails, follow the startup sequence through the embedded controller, find test points, and isolate the part responsible for a short or missing voltage. The 1.02 MB PDF opens in any common viewer with searchable net and component names.
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.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.