SCH

LENOVO EG521 EG522 EZ511 EG721 NM-B451 R1.0.rar

Schematic for Lenovo EG521 / EG522 / EZ511 · board NM-B451 · 2.6 MB · shared in 4 Telegram posts.

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TXTAbout LENOVO EG521 EG522 EZ511 EG721 NM-B451 R1.0 schematic

LENOVO EG521 EG522 EZ511 EG721 NM-B451 R1.0 is a free Lenovo EG521 / EG522 / EZ511 motherboard schematic diagram for board NM-B451. It is packed in a RAR archive of 2.6 MB and covers board revision 1.0. It was first posted on 10 Feb 2021 and is available in 4 Telegram channels.

The NM-B451 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 a boardview, BIOS dumps and board packs — see all NM-B451 files.

Type
Schematics
Format
.rar · RAR archive
Size
2.6 MB
Brand
Lenovo
Board number
NM-B451
Model
EG521, EG522, EZ511
Revision
1.0
First posted
10 Feb 2021
Last posted
18 Jul 2026
Sources
4

Tags

NM-B451 schematicNM-B451 schematic diagramLenovo NM-B451Lenovo EG521 schematicLenovo EG521 motherboardLenovo EG521 circuit diagramLenovo schematic pdflaptop schematic diagramLenovo laptop schematic diagramschematic free download

J1Download NM-B451 schematic from Telegram

R1How to download LENOVO EG521 EG522 EZ511 EG721 NM-B451 R1.0

  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 LENOVO EG521 EG522 EZ511 EG721 NM-B451 R1.0.rar to download it.
  3. Open it with 7-Zip (free) or WinRAR.

If a post was deleted, try another source above or search for NM-B451. Step-by-step help: downloading from Telegram.

.RARWhat is a .rar file and how to open it?

RAR archive. A compressed folder. It can hold a schematic, a boardview, a BIOS dump or all three.

Open with:

  • 7-Zip (free)
  • WinRAR

Tip: If the archive asks for a password, look for it in the Telegram post text.