SCH

Thinkpad E580 LCFC NM-B421 BoardView PDF.pdf

Schematic for Lenovo E580 · board NM-B421 · 188 KB · shared in 5 Telegram posts.

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TXTAbout Thinkpad E580 LCFC NM-B421 BoardView PDF schematic

Thinkpad E580 LCFC NM-B421 BoardView PDF is a free Lenovo E580 motherboard schematic diagram for board NM-B421. The PDF file is 188 KB. It was first posted on 25 Jul 2022 and is available in 5 Telegram channels.

The NM-B421 schematic shows the complete circuit of the motherboard: the always-on 3VALW / 5VALW rails, the battery charger, CPU core and memory power, USB, display, audio and the BIOS/EC section. Use it to trace no-power, no-display, short-circuit and not-charging faults on Lenovo boards.

For the same board you can also find BIOS dumps and a boardview — see all NM-B421 files.

Type
Schematics
Format
.pdf · PDF schematic
Size
188 KB
Brand
Lenovo
Board number
NM-B421
Model
E580
First posted
25 Jul 2022
Last posted
12 Sept 2025
Sources
5

Tags

NM-B421 schematicNM-B421 schematic diagramLenovo NM-B421Lenovo E580 schematicLenovo E580 motherboardLenovo E580 circuit diagramLenovo schematic pdflaptop schematic diagramLenovo laptop schematic diagramschematic free download

J1Download NM-B421 schematic from Telegram

R1How to download Thinkpad E580 LCFC NM-B421 BoardView PDF

  1. Press Download in Telegram. The post opens in the Telegram app, or on a t.me preview page — choose “View in Telegram”.
  2. You don’t need to join the channel. Tap the file Thinkpad E580 LCFC NM-B421 BoardView PDF.pdf to download it.
  3. Open it with Any PDF reader or SumatraPDF.

If a post was deleted, try another source above or search for NM-B421. Step-by-step help: downloading from Telegram.

.PDFWhat is a .pdf file and how to open it?

PDF schematic. A circuit diagram of the motherboard, page by page.

Open with:

  • Any PDF reader
  • SumatraPDF
  • Your web browser

Tip: Press Ctrl+F and search for a part (PU1, PQ3) or a net name (+3VALW, PWR_EN) to jump straight to it.