Duplicate copy of an N5110 schematic in PDF form, the (1) suffix suggesting a second saved instance of the same 1.45 MB document. The name points to the Inspiron N5110 model but states no board number or revision. Use it like any laptop schematic: follow standby and main power rails, find the components behind a dead or shorted line, and identify connector pinouts. It opens in a standard PDF reader. Check that the title block matches the board in front of you, and compare with the other copy if both are kept.
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.