Boardview for the Compal LA-N381P motherboard, revision 1.0, packed in a 142 KB ZIP. LA-numbered boards are Compal designs, and a boardview lets a technician locate components, nets and test points by name, follow a rail across the layers and spot what sits near a shorted line. Open it after extraction in OpenBoardView, FlexBV or a similar viewer. Check that the board code and revision printed on the PCB match before relying on the part locations.
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 @cynetitsolution. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip