Schematic document for the Dell Vostro 3450, supplied as an 805 KB PDF. No board number or revision is given in the name, so confirm the ODM number on the mainboard against the drawing before relying on the details. A schematic like this is the reference for diagnosing no-power and no-display faults. It shows how the adapter, battery charger, standby rails and CPU and memory supplies connect. It also lets you trace signals between the chipset, EC and connectors, and opens in any standard PDF viewer.
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.