Part number 2N5770 is the only detail this 296 KB PDF carries. It is listed as a schematic but names no board or laptop model. Because 2N numbers follow the JEDEC system for discrete transistors and similar parts, expect a manufacturer datasheet with pin assignment, package drawing and electrical limits. Open it in any PDF reader and compare those values with the circuit you are repairing. Confirm the body marking and the package before ordering a replacement, since a footprint mismatch is a common mistake.
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.