A 140 KB PDF named after the semiconductor 2SJ563, listed in the index under schematics. The 2SJ code follows the Japanese JIS scheme, where it identifies a P-channel FET, so expect a single-part datasheet with no device or board details. It is useful when a P-channel switch in a power path or load switch has failed and you need the drain-source voltage, gate threshold, pin assignment and package outline to choose a direct or equivalent substitute. Compare the body marking with the sheet before ordering parts.
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.