Datasheet-type PDF for the 1SS393, 68.8 KB in size and indexed under schematics. The name gives only the part number with a trailing underscore, with no brand, model or board revision. The 1SS code is the Japanese designation used for small-signal diodes. When tracing a failed protection or switching diode on a board, a technician uses this sheet to confirm pinout and polarity, read the marking code and compare ratings with candidate substitutes. Check the footprint dimensions before replacing the part.
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.