PDF, 117 KB, for the 2SA1926 component. Although filed under schematics, the name contains only the part number, so the content is most likely a datasheet. Under Japanese JIS numbering, 2SA indicates a PNP bipolar transistor. A sheet of this kind lists maximum ratings, electrical characteristics and the package outline, which helps when identifying pins in circuit or picking a cross-reference. Read the full marking on the original part and confirm orientation on the footprint before soldering a new device in place.
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.