Laptop mainboard schematic for Compal board LA-K862P, revision 1A according to the name; no laptop brand or model is given. Compal identifies its boards with LA-xxxxP numbers, and these drawings typically include power sequencing, charger, CPU core regulators and connector pinouts. Open the PDF in any reader and search by net name to follow a rail or signal, locate test points and check suspect components. Make sure the LA number and revision printed on the PCB match this document before working from it.
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 @CLRINDORE. 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.