Dell Inspiron N5040 and 1540 schematic in PDF form, with DV15 and CP added in the name, DV15 likely being the ODM project code. The 1.42 MB document helps with tracing the adapter and battery power path, checking regulator outputs and signals, and finding the components on a shorted rail. Because the name gives no motherboard number or revision, read the title block and compare it with the code printed on your board before working from it. Opens in any standard PDF reader with search.
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.
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How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.