Quanta Y22A schematic for motherboard DAY22AMB6E0, revision 1A, packed in a 1.24 MB RAR archive. The name gives no laptop brand or model, so identify the system from the board number printed on the PCB, which follows Quanta's DAY numbering. Make sure the number and revision match exactly before measuring against the drawings. A technician uses such a set to trace power rails, find the source of a short, and locate components and test points around the charger, CPU and memory circuits. The files open in a PDF viewer after extraction.
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.