Schematic in PDF format for the Lenovo motherboard NM-A931, an LCFC design; the name itself carries no revision or laptop model. At 2.56 MB it should include the full set of circuit pages for power input, charging, CPU and memory power, and interface wiring. Use it to trace rails, check enable signals in the power-on sequence and read component values. It pairs naturally with the NM-A931 boardview. Confirm the revision silkscreened on the PCB matches the schematic before relying on details.
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 @cidschematicandboardviewofficial. 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.