Datasheet PDF, about 180 KB, for the 2SB1481, filed in the schematic section of the index under its bare JIS part number. The 2SB prefix means a PNP transistor in the low-frequency category, commonly used in amplifier, driver and regulator stages. Expect maximum ratings, characteristic curves and a package drawing. Before installing a replacement, compare its pinout and power rating against this sheet, and verify the marking on the failed part matches 2SB1481 rather than a similar code.
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.