Lenovo · laptop motherboard

Lenovo ThinkPad T420

SchematicBoardviewBIOS
Revisions
Rev F, Rev G
Files
17
Updated

Lenovo ThinkPad T420 is a laptop motherboard used in the Lenovo ThinkPad T420 and Lenovo ThinkPad NZ73.

The catalog has 1 schematic, 1 boardview file and 15 BIOS files for it, posted between 2017 and 2023 across 4 Telegram channels. Each download button opens the original Telegram post.

File names mention 2 board revisions (Rev F and Rev G). Check the revision printed on your PCB before relying on a boardview or flashing a BIOS dump — How to Open .FZ Boardview Files explains why it matters.

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.

Read and save the original chip contents before you write anything to it — Keeping the Windows Product Key (MSDM) When Reflashing a BIOS.

Compatible models

  • Lenovo ThinkPad T420
  • Lenovo ThinkPad NZ73

Files for Lenovo ThinkPad T420

Schematics 1 All schematics →

Boardview files 1 All boardview files →

BIOS and firmware 15 All bios and firmware →

Notes from the source posts

  • Bios Lenovo T420 NZ3 SWG REV G LNVH-41AB5800-G00G HM67 N12P-NS1-S-A

Frequently asked questions

Which revision of Lenovo ThinkPad T420 do I have?
Files for this board mention Rev F and Rev G. 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 Lenovo ThinkPad T420 boardview file?
The Lenovo ThinkPad T420 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 Lenovo ThinkPad T420 BIOS?
Read the original chip with a programmer and save two copies before writing anything. 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