Schematic for the Lenovo ThinkPad E490 motherboard NM-B911, revision 0.4, in PDF form. The NM- prefix is used by LCFC, Lenovo's own design and manufacturing arm, and the board number is printed on the PCB. The diagram is useful for tracing power rails, following the charging and standby circuits, finding where a short sits and checking signal paths between chips. Open it with any PDF reader, and note that a 0.4 revision is an early version, so component values may differ slightly from production boards.
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 @cynetitsolution. Enginerys does not host this file.
All sources (11)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @cynetitsolution | 27 Oct 2022 | Open file on RM Schematics |
| @alischematics | 16 Nov 2022 | Open file on RM Schematics |
| @generalbios | 27 Sept 2023 | Open file on RM Schematics |
| @afsschematicfree | 9 Nov 2024 | Open file on RM Schematics |
| @cynetitsolution | 15 Nov 2024 | Open file on RM Schematics |
| @pkbiosbdv | 12 Aug 2025 | Open file on RM Schematics |
| @smschematics | 26 Sept 2025 | Open file on RM Schematics |
| @smschematics | 26 Sept 2025 | Open file on RM Schematics |
| @Satale_bios_esquemas_Laptop | 5 Nov 2025 | Open file on RM Schematics |
| @schematics_bios | 4 Aug 2026 | Open file on RM Schematics |
| @schematics_bios | 5 Aug 2026 | Open file on RM Schematics |
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