Schematic in PDF for a Lenovo notebook mainboard NM-A841, revision 1.0, with CG521 given as the platform or project code. NM-prefixed numbers follow the LCFC scheme used for Lenovo laptop boards. The drawings cover power sequencing, regulators, rail names and connector pinouts, making it possible to trace missing voltages and confirm part values during repair. Any PDF reader opens it, and it pairs well with a boardview of the same board. Check that the PCB silkscreen shows NM-A841 rev 1.0.
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 @laptexdna. Enginerys does not host this file.
All sources (5)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @laptexdna | 17 Jul 2020 | Open file on RM Schematics |
| @laptexdna | 25 Jul 2022 | Open file on RM Schematics |
| @afsschematicfree | 2 Jun 2024 | Open file on RM Schematics |
| @generalschematics | 15 Sept 2024 | Open file on RM Schematics |
| @generalschematics | 16 Sept 2024 | Open file on RM Schematics |
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.