Compal LA-3451P schematic archive, revision 0.1, at 1.10 MB. Compal, a large ODM, marks its laptop boards with LA-numbered codes, and the same board may appear in machines from several brands. Engineering revision 0.1 is very early, so component values and placements may differ from a production board; check the revision printed on the PCB first. The diagram is used for tracing rails, finding shorts, locating test points and following the power-on sequence. Open it with WinRAR or 7-Zip.
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 @generalschematics. 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.