Schematic PDF for the Compal board LA-D704P; the name does not say which laptop brand or model uses it. LA-numbered boards follow Compal naming and are produced for many brands, so look the number up against the PCB silkscreen to identify the machine. The 3 MB document lets a technician trace power rails, examine the charger and EC section, locate MOSFETs and check signal paths. Confirm the revision printed near the board number before relying on part values.
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 @oficinacomputadores. 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.