For the 2SA1392, this 174 KB PDF provides the part reference, categorised as a schematic although the name points to a single transistor. JIS numbering places 2SA parts in the high-frequency PNP group. Neither the maker nor any suffix is stated. Open it in a PDF reader to check pinout and outline drawing, read the limit values and characteristic curves, and confirm a substitute matches before fitting it on a board you are repairing.
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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)