A 120 KB PDF filed under schematics, though its name gives only the device number 1SS380 and no board or brand. Under JIS semiconductor numbering, 1SS identifies a small-signal silicon diode, so expect a data sheet with absolute maximum ratings, electrical characteristics and a package outline. It is useful when hunting a substitute for a burnt diode near a signal line or protection circuit. Compare the SMD marking and polarity band on the board with the outline before soldering in a replacement.
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.