PDF component reference, 101 KB, describing the 2SA1798 transistor, listed in the schematic section of the index. The 2SA prefix in the Japanese JIS system identifies a PNP bipolar device. The document is a source for pinout, absolute maximum ratings and characteristic data that a technician needs when testing or replacing the part. Use it to compare voltage and current limits when choosing an alternative, and check the body marking and package style on the board to avoid fitting the wrong device.
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.