Component reference for the 2SB1297, delivered as a 41.7 KB PDF and listed under schematics. The E in the name may stand for an English edition, although this is an assumption. In the Japanese JIS system, 2SB denotes a low-frequency PNP bipolar transistor. Any PDF reader opens it. Use it to check the lead arrangement before in-circuit diode tests, read the breakdown and current limits, and choose a replacement with equal or higher ratings in the same package.
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.