RAR archive for the Dell Latitude 7480 on Compal board LA-E131P, which the name says contains both the PDF schematic and the boardview. Compal makes this Dell board, as the LA-xxxxP code shows. The schematic lets you trace power rails and signals, while the boardview, opened in OpenBoardView or FlexBV, locates components and test points on the PCB. Together they speed up short hunting and no-power diagnosis. Check the revision on the board before relying on either.
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 @schematiclaptopramkushwaha. 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.