Laptop motherboard
Lenovo Thinkpad T490s NM-B891 Schematic
This page lists the schematic for Lenovo Thinkpad T490s NM-B891, a laptop motherboard by Lenovo. The board was designed and built by Compal under board number NM-B891. The same board number appears in 1 more file — see below.
Download from Telegram- Brand
- Lenovo
- Category
- Laptops
- Model
- T490S
- Manufacturer (ODM)
- Compal
- Board number
- NM-B891
- Contents
- Schematic
- Available on
- Telegram
- File name
Lenovo Thinkpad T490s NM-B891 Schematic.rar
Same board number 1
All files for NM-B891- Thinkpad T490S NM-B891LenovoNM-B891Boardview
More Lenovo T490S files 1
Lenovo T490S overviewOther Lenovo laptops
All Lenovo filesSchematicSCHEMATIC LENOVO ThinkPad L440 Wistron LOS 1 DIS UMA 12289 1 RevLenovoFilesLenovo Thinkpad X1 12298-2LenovoSchematicLenovoTianYi300-15ISK Compal LA-D101P R1.0Lenovo · LA-D101PFilesLenovo X270 NM-B061 r04 0815 R 03Lenovo · NM-B061BoardviewLenovo Thinkpad X270 NM-B061 Rev04Lenovo · NM-B061SchematicLenovo ThinkPad T490, T590 - DRIFT NM-B901Lenovo · NM-B901SchematicLenovo Legion Y920-17IKB LCFC-DS321 NM-B311 R 0.2Lenovo · NM-B311SchematicLenovo IdeaPad 320-15IKB LCFC NM-B451 UMALenovo · NM-B451
Questions about this file
What is the board number of Lenovo Thinkpad T490s NM-B891?
The file is for board NM-B891, made by Compal. Check that the same number is printed on your PCB before you rely on the file. Where to find it.
What can I do with the schematic?
Use the power-sequence and power-rail pages to find where a no-power or no-image fault starts, then locate the parts with a boardview. No-power diagnosis plan.
Is the download free?
Yes. The button opens post #3857 in the public Telegram channel @schematicslaptop, where the file can be downloaded with a free Telegram account.