A 27.0 KB PDF bearing the part code 5LN01SS, stored in the schematic category. The name carries no other information; the LN letters in this family seem to mark the N-channel MOSFET type, with SS likely naming a small package. Use the datasheet to find the gate, drain and source pins, threshold voltage and current ratings before measuring or replacing the transistor. Check pad dimensions on the PCB against the package drawing, as the suffix versions use different outlines.
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.