Compressed RAR package for the LG Gram 17Z90N laptop, about 9.4 MB in size. The file name does not list what is inside, so it may contain a schematic, boardview, BIOS dump or a mix of these; open it with WinRAR or 7-Zip and check the contents before use. For board-level repair on the Gram, such material helps trace power rails, find test points and restore firmware. Whatever the archive turns out to hold, confirm that the board number printed on the mainboard matches the documents or image before relying on them.
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 @boardsscanrepo. 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.