Lcfc NM-B421 Schematic
This page has the schematic for Lcfc NM-B421, a laptop motherboard from Lenovo. The board itself was engineered by Compal and carries board number NM-B421. 2 more files in the library share this board number — they're listed below.
Download via TelegramSame board number 2
All files for NM-B421- LENOVO E480 - NM-B421 Rev1.0LenovoNM-B421Boardview
- Thinkpad E580 LCFC NM-B421LenovoNM-B421BoardviewSchematic
Other Lenovo laptops
All Lenovo filesFilesLenovo FLEX 14 Compal EL4C1 &Amp;Amp; EL451 C340 S540 14 LA H081PLenovo · LA-H081PBoardviewLenovo X1 Carbon 2012. .11246-SCLenovoSchematicLenovo X1 Carbon LGS 1 91 4RQ01 001 JULY 18 2011 2012 SchematicLenovoSchematicLenovo E470 CE470 NM-A821 Rev 2.0Lenovo · NM-A821BoardviewLenovo Ideapad 330 17ICH LCFC EG530 NM B671Lenovo · NM-B671BoardviewLenovo IdeaPad 330-15IKB Lcfc NM-B451 Rev 0.2Lenovo · NM-B451SchematicLenovo ThinkPad L490 Compal FL490 FL590 NM B931 Rev 1.0 SchematicLenovo · NM-B931SchematicLenovo Y700 NM-A541Lenovo · NM-A541
Questions about this file
Which board number is this Lcfc NM-B421 file for?
It's for board NM-B421, made by Compal. Compare it with the number printed on your PCB before relying on the file. Where to find it.
How do I use the schematic for diagnosis?
Start with the power-sequence and power-rail pages to find where a no-power or no-image fault begins, then locate the parts with a boardview. No-power troubleshooting plan.
Is the download free?
Yes. The button opens post #7112 in the public Telegram channel @schematicslaptop, where the file can be downloaded with a free Telegram account.