PDF reference for the 2SA1968, 91.3 KB, indexed as a schematic though the bare part-number name points to a transistor datasheet. Under JIS conventions 2SA indicates a PNP bipolar device. A related LS-suffixed variant also exists in the index, so be sure the marking on the board matches before relying on these specs. Typical uses are confirming emitter, base and collector pins, reading maximum ratings and gain classes, and checking the package drawing when looking for a substitute.
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.