Lenovo · laptop motherboard

Lenovo Legion Y520-15IKBN NM-B191

SchematicBoardviewBIOS
Board code
NM-B191
Platform
DY512
Made by
LCFC
Revisions
Rev 1.0
Files
16
Updated

Lenovo Legion Y520-15IKBN NM-B191 is a laptop motherboard designed by LCFC and used in the Lenovo Legion Y520-15IKBN, Lenovo Legion Y520 and Lenovo Y520-15LKBN.

The catalog has 3 schematics, 3 boardview files and 10 BIOS files for it, posted between 2019 and 2026 across 4 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 is packed in an archive and the file name does not say which format is inside; most open in OpenBoardView or FlexBV. What Is a Boardview File and Why You Need One lists the common formats.

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 1 MB and 16 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 DY512; codes NM-B391.

Compatible models

Files for Lenovo Legion Y520-15IKBN NM-B191

Schematics 3 All schematics →

Boardview files 3 All boardview files →

BIOS and firmware 10 All bios and firmware →

Frequently asked questions

Which laptops use the NM-B191 motherboard?
File names in the catalog tie NM-B191 to the Lenovo Legion Y520-15IKBN, Lenovo Legion Y520 and Lenovo Y520-15LKBN. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
Which revision of NM-B191 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-B191 boardview file?
The NM-B191 boardview comes inside an archive whose name does not state the format. Unpack it and check the extension; most laptop boardviews open in OpenBoardView or FlexBV. See What Is a Boardview File and Why You Need One.
What should I check before flashing the NM-B191 BIOS?
Read the original chip with a programmer and save two copies before writing anything. File names for this board mention 1 MB and 16 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.

Guides for this board

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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