RAR package of 1.66 MB for the Samsung Q35 notebook. The name gives the model and nothing else, so board revision, project code and file list are not known until extracted. Repair documents of this kind are used to trace the power-on sequence, find which regulator fails to output, check rails for shorts and identify component values. Open it with WinRAR or 7-Zip. Before working from the drawings, compare the board number printed on the motherboard, normally a Samsung BA41 code, with the one in the files.
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 @IT_SERVICE_WORLD. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.