Lenovo laptop schematic for the NM-A361 mainboard, supplied as a PDF with no model or revision given in the name. The NM-xxxx numbering belongs to LCFC, the Lenovo joint venture that designs and builds many IdeaPad and ThinkPad boards. Inside you can expect power sequencing, rail names, EC, charger and connector pinout pages that help with tracing missing voltages or locating the source of a short. Any PDF reader opens it. Confirm the board number on the PCB and the revision in the title block before working on the machine.
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 @cidschematicandboardviewofficial. 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.