A 92.5 KB PDF named after 2SJ256, a JIS-numbered P-channel field-effect transistor according to its 2SJ prefix. Though the catalogue lists it as a schematic, the file is probably a single-part datasheet. It supports repair by giving the pinout, maximum drain-source and gate-source voltages, drain current and switching data needed to test the transistor or find a replacement. Open it with any PDF reader. Lead order can differ between packages, so check it against the PCB footprint 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.