The 2SA1703 is covered by this 126 KB PDF, listed in the schematic category although only the part number appears in the name. Under the Japanese JIS system, 2SA stands for a PNP bipolar transistor, so treat the document as a datasheet giving maximum ratings, characteristics and package data. It is handy for confirming pinout before soldering, checking whether a measured part is within specification, and finding a suitable equivalent; always match polarity, package and ratings rather than relying on a cross-reference list alone.
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.