An archive of repair files (board LA-J662P). Shared as “GPC54 LA-J662P (REV 1.0) (2020-03-23).rar” — a .rar file, 9.83 MB.
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 @Satale_bios_esquemas_Laptop. 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.