LCFC boardLaptop mainboardUpdated 2026-09-17
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NM-B861 schematic, boardview & BIOS

LCFC board used in Lenovo ThinkPad X1 Yoga 4TH. FX490 Lenovo ThinkPad X1 Yoga 4TH

Files for NM-B861 (14)

TypeFormatFile nameRev SizeAddedDownloadMirror
Schematic .pdf FX490 NM-B861 (REV 1.0) (BDV) (PDF)PK.pdf 1.0 150 KB Telegram —
Schematic .pdf NM-B861 (REV 1.0) PDF(PK).pdf 1.0 19 MB Telegram —
Schematic .pdf FX490 NM-B861 (REV 1.0) (BDV).pdf 1.0 150 KB Telegram —
Schematic .pdf FX490 NM-B861 (REV 1.0) PDF.pdf 1.0 19 MB Telegram —
Schematic .pdf SKB NM-B861 BoardView PDF.pdf — 150 KB Telegram —
Schematic .pdf SKB NM-B861 SCHEMATIC.pdf — 3.2 MB Telegram —
Boardview .zip Thinkpad_X1_Yoga_4th_Gen_FX490_NM_B861_REV0_2_BoardView_tvw.zip 0.2 1.3 MB Telegram #1
Boardview .rar FX490 NM-B861 (REV 1.0) PDF.rar 1.0 5.0 MB Telegram —
BIOS .rar FX490 NM-B861, Rev 1.0 PF1S98JG absolute on.new.rar 1.0 11 MB Telegram —
BIOS .rar LENOVO NM-B861 REV 1.0 BIOS 100% OK.rar 1.0 19 MB Telegram —
BIOS .bin LENOVO NM-B861 REV;1.0 BIOS.BIN 1.0 32 MB Telegram —
BIOS .rar X1_Yoga_4th_Gen_Type_20QF,_20QG_NM_B861_REV_1_TESTED_BY_FST_FIX.rar 1 10 MB Telegram —
BIOS .rar X1_Yoga_4th_Gen_Type_20QF,_20QG_Type_20QG_NM_B861_REV_1_TYPE_C_1MB.rar 1 116 KB Telegram —
BIOS .rar X1 CORBON 7TH GEN NM-B861 UNLOCK MAIN+EC 100% OK TESTED.rar — 11 MB Telegram —

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Models using this board

Model names are taken from the file names as published; always confirm the board number printed on your PCB.