Dell schematic in PDF form, named only for the N5110, which corresponds to the Inspiron N5110 model; the name gives no board number or revision. At 1.45 MB it is a typical full laptop circuit diagram. Technicians use such drawings to trace power rails, follow the power-on sequence, read component values and locate the parts responsible for a short or a missing voltage. Since the board code is not stated, open the document and compare the board number on its title blocks with the one printed on your PCB before relying on 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 @schematicslaptop. 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.