Sheet for the 2SB156, labelled in the name as a PNP transistor rated -20 V and -500 mA, provided as a 39.7 KB PDF and indexed under schematics. The 2SB prefix in JIS numbering marks PNP devices intended for low-frequency use, which fits these modest ratings. Technicians use the document to identify lead order, remember the reversed polarity when testing junctions with a meter, and choose a modern replacement with at least the stated voltage and current. Check the package and marking on the fitted part first.
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.