ThinkPad T440 schematic for LCFC mainboard NM-A101. LCFC, the Lenovo joint-venture ODM, uses the NM- prefix on its boards, and the code is printed on the PCB. No revision is given in the name, so read it from the title block. The 6.57 MB PDF covers the charger, EC, CPU power stages and peripheral circuits, making it useful for diagnosing missing rails, tracing shorts and finding test points. Match the board marking before taking measurements based on it.
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 @ITHINKHS. 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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)