Small 43.1 KB PDF for the 2SJ400, likely a short datasheet despite being indexed as a schematic. According to JIS semiconductor naming, the 2SJ prefix designates a P-channel field-effect transistor. The name carries no manufacturer, case or revision information. Useful for checking pin assignment and key limits such as drain-source voltage and drain current when a switch stage fails. Confirm the marking on the component body matches before relying on the pinout, and test the part out of circuit for leakage.
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.