Schematic for Lenovo board NM-A711, packed in a RAR archive. The NM-xxxx pattern is the numbering used by LCFC, Lenovo's own ODM. A circuit diagram like this lets a technician trace power rails, follow enable and power-good signals, find the parts in the charging and voltage regulator circuits, and work out where a short originates. Extract it and open it in a PDF viewer. Check that the board in hand carries the NM-A711 marking, as related boards can differ in detail.
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 @laptexdna. 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)