Bottom-side placement drawing for the Compal LA-F391P board, a 106 KB PDF that pairs with the top-side view and the full BRMLK12U schematic. No laptop model is stated, so identify the machine by the board number printed on the PCB. Underside layouts are needed to locate small passives, test pads and components found in the circuit diagram once the board is turned over. Compal uses the LA-xxxxP numbering for notebook mainboards built for various brands. It is a location map, not a circuit diagram.
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 @afsschematicfree. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.