PDF reference for the 2SA1203, 99.3 KB, sorted among schematics although the bare part-number name points to a datasheet. A 2SA code in Japanese JIS numbering marks a PNP bipolar transistor. Use the document to confirm terminal layout for in-circuit measurement, read voltage, current and power limits, and match the package outline to the footprint. Small-signal parts often carry shortened marking codes, so verify the identity of the device on the board before trusting the sheet for 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.