Lenovo laptop schematic in PDF for board NM-E231, revision A0. The NM- prefix belongs to LCFC, the Lenovo-owned ODM, whose diagrams typically include a power sequence, rail map and block diagram. Use it to trace power rails, find the charger and PWM controllers, check signals and locate fuses when chasing a short or no-power fault. Open it in any PDF viewer and search for net names. Make sure the NM-E231 code and revision on the PCB match, as other revisions may differ.
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 @vinafix_bios. 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.