Schematic for the Lenovo E40 in a 1.38 MB PDF, with a name that gives only the model and a copy suffix, without board number, ODM or revision. It is likely the same drawing as another E40 file of identical size, but compare them to be sure. Use it to trace power rails, measure regulator outputs, follow the power-on sequence and locate components on a short. Any PDF viewer opens it. Read the board number in the title block and match it to the label printed on your PCB.
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.