Lenovo laptop schematic for the BMWC1 and BMWC2 projects on mainboard NM-A471, revision 0.4, as a PDF in a 1.85 MB rar. NM-Axxx numbers belong to LCFC, Lenovo's own manufacturing ODM. Engineers use such a document to follow the charger, CPU and memory rails, locate the EC and its signals, and work out where a short or missing voltage originates. Revision 0.4 is an early issue, so compare it carefully with the board and check that NM-A471 is printed on the 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.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 3 Jul 2022 | Open file on RM Schematics |
| @schematics_bios | 14 Aug 2026 | Open file on RM Schematics |
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.