Quanta schematic archive for the NL8B and NL8A boards, PCB number DANL8BMB8D0, revision 1A. The 1.88 MB RAR file is likely to contain the diagram shared between these two variants, though the contents are not listed. No laptop brand appears in the name. The DA prefix followed by the project code is Quanta's numbering for the bare mainboard. It is printed on the PCB and helps confirm a match. Use the file to trace power rails, find faulty regulators and locate the BIOS chip. Check which variant you have before probing.
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.