RAR archive for the Lenovo ThinkPad E390, 1.41 MB. The name carries no board number or revision, so check the code silkscreened on the PCB against the title page after extracting. Since the format is a generic archive, the contents are unconfirmed and could be a schematic, a boardview or both. Use such material to follow power rails, locate test points for the always-on supplies, and find the faulty part behind a short or no-boot.
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.
7-ZipWinRARThe Unarchiver (macOS)