Lenovo E40 circuit diagram in PDF, approximately 1.38 MB, with no board number or revision stated in the file name. The document opens in any PDF reader, and searching net names lets you trace a rail or signal across pages quickly. Use it to diagnose no-power faults, measure expected voltages, find what sits on a shorted line and identify replacement parts by reference designator. Before relying on it, read the board code inside the schematic and confirm it matches the number silkscreened on the motherboard you are repairing.
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.