PDF schematic of 1.33 MB titled ZQM-UMA, apparently a motherboard project code ZQM in its UMA configuration, meaning integrated graphics without a discrete GPU. The name gives no brand, laptop model or revision, so identify the board first by the code on the PCB. A schematic like this lets a technician follow power sequencing, check rail values and enable signals, and trace circuits around the charger, CPU and memory. UMA and discrete-graphics versions of a board differ, so make sure your unit has no dedicated GPU before relying on these pages.
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 @cyberlanelectonik. 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.