Named 100bgq045, this 85.8 KB PDF is filed among schematics, though the title reads as a power rectifier part code rather than a board number, and no device, brand or revision is given. A companion 100bgq100 sheet is also indexed, implying the trailing digits select the voltage grade. Use it to look up forward voltage, reverse rating, pinout and package details when testing or replacing such a diode. Any PDF viewer will open it; confirm the full code on the component before substituting.
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.