Catalogued as a schematic, this 77.1 KB PDF named 30SLJQ060 carries a discrete rectifier style part number, so treat it as a component datasheet. The 060 portion likely encodes the voltage grade, setting it apart from the 030 and 045 files in this set. A datasheet like this lets a repair technician compare electrical ratings and the package outline when replacing a faulty diode in a power path. Read the marking on the board component carefully and make sure the footprint and polarity agree before installing 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.