Archive covering the Quanta Y23 and Y23A boards, project name VINE, designed for the AMD Richland APU platform. Packed as RAR at 3.28 MB, it probably contains schematics and possibly a boardview, though the name does not confirm the exact files. Quanta builds these mainboards for several notebook brands, so match the Y23 or Y23A code on the motherboard silkscreen first. Technicians use such material to locate the APU core regulator, trace power sequencing signals and find test points while chasing shorts.
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 @alischematics. 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.