Lenovo laptop schematic for board NM-A931, a 2.56 MB PDF. The name gives no model or revision, so identify the target machine by the board number. The NM- prefix follows the LCFC numbering, the Lenovo-owned ODM that inherited the Compal-style scheme. The diagram is used to trace power rails and charging circuits, follow enable and power-good signals and locate components when diagnosing shorts. Open it in any PDF viewer and match the board number and revision silkscreened on the PCB before measuring.
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 @schematiclaptopramkushwaha. 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.