A 43.4 KB PDF datasheet covering the 1N5400 diode. Although catalogued as a schematic, it is a part specification sheet, the kind of reference you open when a rectifier in a supply, charger or adapter has failed short or open and needs a matched substitute. Expect maximum reverse voltage, forward current, surge rating and outline dimensions. Any PDF reader opens it. Compare the body marking and package on the board with the drawing before ordering, and confirm the replacement meets or exceeds every listed rating.
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.