Under the Japanese JIS scheme the 2SB726 is a PNP bipolar transistor, so this 39.6 KB PDF, though catalogued as a schematic, should be its datasheet; the _E suffix probably means English. The 2SB series is generally intended for lower-frequency and audio or power duty. The sheet should list lead order, case drawing, maximum ratings and gain classes. Remember polarity when testing: a PNP junction conducts in the opposite meter direction to NPN, and any substitute must also be PNP with suitable ratings.
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.