Lenovo schematic for project EX480 on board NM-B481, revision 1.0. The NM-xxxx numbering is used by LCFC, the Lenovo and Compal joint venture, and the code is printed on the PCB. The 3.80 MB PDF covers the power rails, the charger, the EC, the memory and the I/O, and technicians use it to trace signals, find test points and identify shorted components. Confirm the board number and the 1.0 revision on your mainboard before trusting component values.
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 @hrtechno. Enginerys does not host this file.
All sources (7)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @hrtechno | 23 Jul 2021 | Open file on RM Schematics |
| @alischematics | 13 Sept 2021 | Open file on RM Schematics |
| @pepeelectronica | 28 Apr 2022 | Open file on RM Schematics |
| @Satale_bios_esquemas_Laptop | 26 Nov 2024 | Open file on RM Schematics |
| @ShareMan_Electronic_Files | 12 May 2025 | Open file on RM Schematics |
| @schematics_bios | 27 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 3 Aug 2026 | Open file on RM Schematics |
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.