Schematic PDF for the Dell Inspiron N5110 laptop, 1.45 MB; the (1) suffix suggests a duplicate copy, and no board number or revision appears in the name. Open it in a PDF reader to trace the charger, standby and CPU power rails, follow the power-on sequence and identify components around the EC and SPI flash. Dell laptops are usually built by ODMs, so check the board number printed on the PCB against the title block of the schematic to confirm they match before using 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 @cyberlanelectonik. 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.