At 55.5 KB, this PDF carries only the part number 1SS315 in its name, with no board, model or revision stated. The code fits the Japanese JIS numbering for small-signal diodes, largely used by Toshiba, indicating a component datasheet rather than a motherboard diagram. Open it with any PDF reader to check polarity, package drawing, marking code and electrical limits. Matching those details against the part on the PCB is the safe first step before removing it or fitting a substitute.
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.