Only the part number 1SS336 appears in this 68.3 KB file name, and the PDF is filed under schematics. The 1SS prefix follows the JIS numbering for small-signal diodes, extensively used by Toshiba, so it most likely documents a single diode. Technicians refer to such a sheet for package type, polarity, reverse voltage and forward current limits, and characteristic curves. That information matters when tracing a short to a protection or switching diode and choosing a part that fits the same footprint and 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.