Component reference sheet saved as a 131 KB PDF under the name 30epf10 and filed with schematics. The code resembles a power rectifier diode part number, but the name itself states no brand, equipment or board. Expect maximum reverse voltage, average forward current, surge rating, thermal data and a package outline. That helps when diagnosing a shorted or open diode in a PSU or inverter stage. It also helps when choosing an equivalent part. Check the printed marking on the original 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.