Lenovo · laptop motherboard

Lenovo Yoga 920 NM-B291

SchematicBoardviewBIOS
Board code
NM-B291
Platform
EYG70
Made by
LCFC
Revisions
Rev 1.0
Files
3
Updated

Lenovo Yoga 920 NM-B291 is a laptop motherboard designed by LCFC and used in the Lenovo Yoga 920 and Lenovo Yoga 920-13IKB-EYG70.

The catalog has 1 schematic, 1 boardview file and 1 BIOS file for it, posted between 2022 and 2025 across 3 Telegram channels. Each download button opens the original Telegram post.

The files are marked Rev 1.0; other revisions of the same board can differ in parts and layout.

The boardview comes in .BDV and .TVW format. .TVW files usually need FlexBV or the viewer they were exported for; OpenBoardView handles .BRD, .BDV and .FZ. See OpenBoardView: Installation and First Steps.

With both a schematic and a boardview you can find a net on the diagram and then locate the same part on the board by its reference designator. No Boardview for Your Board? How to Work Without One shows the workflow.

BIOS notes: file names mention 8 MB chip sizes; some archives also hold EC/KBC firmware. Read and save the original chip contents before you write anything to it — Keeping the Windows Product Key (MSDM) When Reflashing a BIOS.

Also listed under platform EYG70.

Compatible models

  • Lenovo Yoga 920
  • Lenovo Yoga 920-13IKB-EYG70

Files for Lenovo Yoga 920 NM-B291

Schematics 1 All schematics →

Boardview files 1 All boardview files →

BIOS and firmware 1 All bios and firmware →

Notes from the source posts

  • You can give us as a gift.

Frequently asked questions

Which laptops use the NM-B291 motherboard?
File names in the catalog tie NM-B291 to the Lenovo Yoga 920 and Lenovo Yoga 920-13IKB-EYG70. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
Which revision of NM-B291 do I have?
Files for this board mention Rev 1.0. The revision is printed on the PCB silkscreen, usually next to the board code. Pick files with the same revision when you can; if yours is not listed, the closest revision is usually fine for the schematic but check part positions in the boardview carefully.
How do I open the NM-B291 boardview file?
The boardview for NM-B291 is available as .BDV and .TVW. .BDV usually opens in OpenBoardView (free) or FlexBV. .TVW usually needs FlexBV or the matching viewer. See What Is a Boardview File and Why You Need One.
What should I check before flashing the NM-B291 BIOS?
Read the original chip with a programmer and save two copies before writing anything. File names for this board mention 8 MB images; the dump size must match your chip. Some archives include EC/KBC firmware, which may need to be written to a separate chip. A dump from another board carries that board's serial number and MAC address, so restore yours from the backup.

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Files are hosted on Telegram by third parties; ExcitingSpas.com only links to public posts. Check that a file matches your board before using it. Disclaimer · Report a file