Schematic in PDF for the Lenovo IdeaPad Y470 laptop. The name gives no board number or revision, so check the title block inside the 1.13 MB document against the number printed on your motherboard before using it. A PDF viewer is enough to read it, and text search usually finds nets and part designators quickly. Typical uses include following the power-on sequence, measuring rails at the regulators, locating the EC and BIOS chip, and narrowing down which component is pulling a line to ground.
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.