Largest in this set at 269 KB, the PDF 2SD2414 is catalogued as a schematic, yet its 2SD prefix marks an NPN bipolar transistor under the Japanese JIS scheme. No device, brand or motherboard number is given. A file of this size may include detailed characteristic curves, application notes or several package options. Use it to identify terminals, check voltage, current and power limits and compare replacements. Read the marking on the original component, typically D2414, and confirm the package before swapping.
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.