PDF schematic for the Lenovo Y470, with the name giving the model only and no board number, ODM or revision. Confirm the project code in the document title block against the one printed on the motherboard before working from it. The diagram lets a technician follow rails from the adapter through the charger to the CPU and chipset, check power-good signals, locate fuses and MOSFETs, and identify components on a shorted line. It is about 1.13 MB and opens in any standard reader.
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.