PDF for the 2SA1254, 43.0 KB, whose name ends in an E suffix that may denote a language or edition variant, though the file does not confirm that. Under JIS numbering the 2SA prefix identifies a PNP transistor, so the document is best treated as a datasheet despite its schematic label. Expect pin identification, package and maximum ratings. Use it to check orientation on the PCB, test the junctions of a removed part, and confirm that any replacement matches its voltage and current limits.
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.