Schematic Lenovo Thinkpad L14 GEN 1 GL4A0 GL5A0 NM-C631 Schematic

[Salim Badakhshan]

Lenovo Thinkpad L14 GEN 1 GL4A0 GL5A0 NM-C631 Schematic

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Technical Specifications

Parameter	Value
Brand	LC Future Center
Model	GL4A0/GL5A0 NM-C631
Motherboard Manufacturer	LC Future Center
Board Number	NM-C631
Revision	1.0
Date	Feb.12.2020
CPU Platform	R19M-M25
EC / KBC	NPCE68APA0DX
Audio Codec	ALC3287
Charging IC	BQ25700A
RAM Type	DDR4
RAM Architecture	Sub Channel-A, Sub Channel-B
LAN IC	Jacksonville
WiFi / WLAN IC	NM-C631
Card Reader IC	Media Card Controller
USB Hub IC	TPS65988DJ
HDMI Level Shifter	DDI Demultiplexer
GPU Type	R19M-M25
Graphics Architecture	VRAM Channel-A
dGPU Chip Number	R19M-M25
Power IC(s)	LV6228C, SYX198B, SY8310RAC, RT8068A, RT3605BE, RT9610CGQ, RT9610, RT9610CGQW, NB693, RT8068A, RT3662EB, NB691GG
Thermal Sensor	GL4A0/GL5A0
SPI Flash	SPI FLASH

Technical Summary

The LC Future Center GL4A0/GL5A0 NM-C631 motherboard, revision 1.0 dated February 12, 2020, is built around the R19M-M25 CPU platform with DDR4 memory configured in Sub Channel-A and Sub Channel-B. The system is managed by an NPCE68APA0DX EC/KBC controller and features an ALC3287 audio codec. Power delivery is handled by a comprehensive array of DC/DC converters including LV6228C, SYX198B, SY8310RAC, RT8068A, RT3605BE, RT9610CGQ, RT9610, RT9610CGQW, NB693, RT3662EB, and NB691GG. The charging architecture is based on the BQ25700A battery charger. The discrete GPU is identified as R19M-M25 with dedicated VRAM Channel-A. Connectivity includes a Jacksonville LAN IC, NM-C631 WLAN, a Media Card Controller, TPS65988DJ USB hub/PD controller, and a DDI Demultiplexer for HDMI. The board also incorporates a dedicated SPI Flash section and thermal sensors labeled GL4A0/GL5A0.

Technician FAQ

Q: What EC/KBC controller is used on this motherboard?

A: The EC/KBC controller is the NPCE68APA0DX.

Q: What charging IC is used on this motherboard?

A: The charging IC is the BQ25700A.

Q: What is the GPU configuration on this motherboard?

A: The discrete GPU is the R19M-M25 with dedicated VRAM Channel-A.

Q: What audio codec is used on this motherboard?

A: The audio codec is the ALC3287.

Technical data structured and organized by Dr-Bios.com, based on original schematic source analysis.

Indexed motherboard components

Open a component to see every indexed schematic that uses the same part.

NM-C631 Board Number R19M-M25 CPU Platform NPCE68APA0DX EC / KBC ALC3287 Audio Codec BQ25700A Charging / PD IC DDR4 RAM Type NM-C631 WiFi / WLAN TPS65988DJ USB Controller R19M-M25 Graphics VRAM Channel-A Graphics R19M-M25 Graphics LV6228C Power IC NB691GG Power IC NB693 Power IC RT3605BE Power IC RT3662EB Power IC RT8068A Power IC RT9610 Power IC RT9610CGQ Power IC RT9610CGQW Power IC SY8310RAC Power IC SYX198B Power IC GL4A0/GL5A0 Thermal / Fan Control