BIOS WORLDLenovo (LCFC) NMB271 Graf V2 · Schematic (89 pages)
File name: NMB271 Graf V2.pdf
Lenovo (LCFC) NMB271 Graf V2 — Schematic, board NM-B271, 89 pages. Main chips: MEC1650 / PC97100 / PC97090 (EC), W25Q128JVPIQ / W25Q80JVZPIQ / W25Q16FWZPIG (BIOS flash), BQ25700ARSNR / BQ25700A (charger), MP86901 / MP86901-CGLT-Z / TPS68470 (PWM). Covers: audio, chipset (PCH), WLAN / Bluetooth, charger / battery, PMIC, USB-C.
- Type
- Schematic / document
- Size
- 2.1 MB
- Pages
- 89
- Added
- 2026-10-09
- Brand
- Lenovo (LCFC)
- Board
- NM-B271
- Also written as
- NMB271 · NM B271 · NMB 271 · NMB-271
- MD5
- 3DE5F38EAF1519A8985EDC381BD4BD32
- Found in
- Computers › Laptop › Lenovo ThinkPad › X1 & X series › X1Tablet-3RD
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Main chips and parts
| Part | Function |
|---|---|
| MEC1650 | EC (embedded controller) |
| PC97100 | EC (embedded controller) |
| PC97090 | EC (embedded controller) |
| W25Q128JVPIQ | BIOS / SPI flash |
| W25Q80JVZPIQ | BIOS / SPI flash |
| W25Q16FWZPIG | BIOS / SPI flash |
| W25Q128FVPIQ | BIOS / SPI flash |
| MX25L12873FZNI-10G | BIOS / SPI flash |
| BQ25700ARSNR | Charger |
| BQ25700A | Charger |
| MP86901 | Power (PWM) |
| MP86901-CGLT-Z | Power (PWM) |
| TPS68470 | Power (PWM) |
| NB695GD | Power (PWM) |
| NB695GD-Z | Power (PWM) |
Text from the first pages
PCH WLAN · WLAN WWAN · 3 CONN MODULE MODULE INTERFACE ALC3278 SENSE CONNECTOR ALC3291 CONNECTOR VOLUME · SLOT PMIC WF/UF 1 2 CODEC SPEAKER G-SENSOR CONNECTOR · SOCKET SOCKET LDO CARD JACK JACK DSP BEEP · BATTERY BUTTON TYPE-C · Logic DIAGRAM DDI/EDP DDR DDR MISC/JTAG LPSS/ISH AUDIO/SDXC CSI-2/EMMC CLOCK SYSTEM CPU CPU PCH GND CONNECTOR TPM DEMULTIPLEXER (1/2) (2/2) CONN SWITCH · Camera Camera ROM IR · SSD SD · Touch W25Q128FVPIQ IRIS Kyssa · PCIE Micro Front 500M Rear 800M Wacom BIOS · Conn Reader · NGFF M Card Camera · NGFF Type · CRTL Port1 Port2 CRTL · D-MIC type Print