Part code 1SS302 is the sole detail in this 67.5 KB PDF name; no laptop model, board number or revision is stated. The 1SS designation is the JIS scheme for small-signal diodes, widely used by Toshiba, so the file is most likely a datasheet despite its schematic category. It is handy for confirming polarity and internal arrangement, reading voltage and current limits, and identifying the part by marking. Verify the package and marking on the PCB match before using it to pick a replacement.
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.