lenovo le4 f420 schematic 1
Technical Specifications
Technical Summary
The Quanta LE4 project is a motherboard platform designed around the Intel Yonah/Merom CPU in a 478 Micro-FCPGA socket, paired with the Calistoga northbridge and ICH7-M southbridge. Graphics are handled by an integrated VGA function with support for 945PM, 945GM, and 940GML chipsets, alongside a discrete NVIDIA G72MP GPU. System memory consists of two DDRII SODIMM slots operating at 266 or 333 MHz. Power management is handled by a suite of ICs including the MAX8771 for CPU core, MAX8734 and MAX1993 for system power, and MAX8632 for suspend rails. The embedded controller is a PC87551, and audio is provided by a Conexant CX20549-12 codec amplified by a MAX9755. Networking is supported by either a BCM4401 10/100 or BCM5788 1G LAN controller. The platform also includes a TI 8412 card reader and a 87383 Super I/O.
Technician FAQ
Q: What is the project code and board manufacturer for this motherboard?
A: The project code is LE4, manufactured by Quanta Computer Inc.
Q: What CPU socket and platform does this motherboard use?
A: It uses a 478 Micro-FCPGA socket for Intel Yonah/Merom CPUs, with the Calistoga northbridge and ICH7-M southbridge.
Q: What is the embedded controller (EC/KBC) on this board?
A: The embedded controller is a PC87551.
Q: What are the power management ICs used on this motherboard?
A: The power ICs include the MAX8771 for CPU core, MAX8734 and MAX1993 for system power, and MAX8632 for suspend voltage rails.
Q: What audio codec and amplifier are used?
A: The audio codec is a Conexant CX20549-12, amplified by a MAX9755.
Technical data structured and organized by Dr-Bios.com, based on original schematic source analysis.
Technical Specifications
| Parameter | Value |
|---|---|
| Brand | Quanta Computer Inc. |
| Project Code | LE4 |
| Date | Wednesday, November 16, 2005 |
| CPU Platform | Yonah / Calistoga / ICH-7M |
| CPU Model | Yonah/Merom |
| CPU Socket | 478 Micro-FCPGA |
| PCH / Southbridge | ICH7-M |
| GPU Type | NVIDIA G72MP |
| Graphics Architecture | Integrated VGA Function / 945PM / 945GM / 940GML |
| EC / KBC | PC87551 |
| Audio Codec | Conexant Audio / CX20549-12 |
| Charging IC | MAX8724 |
| Power IC(s) | MAX8771 / MAX8734 / MAX1993 / MAX8632 |
| RAM Type | DDRII |
| RAM Architecture | DDRII 266, 333 MHz |
| RAM Quantity / Slots | 2 |
| LAN IC | BCM4401 / BCM5788 |
| Card Reader IC | TI 8412 |
| Audio Amplifier | MAX9755 |
| Super I/O | 87383 |
Technical Summary
The Quanta LE4 project is a motherboard platform designed around the Intel Yonah/Merom CPU in a 478 Micro-FCPGA socket, paired with the Calistoga northbridge and ICH7-M southbridge. Graphics are handled by an integrated VGA function with support for 945PM, 945GM, and 940GML chipsets, alongside a discrete NVIDIA G72MP GPU. System memory consists of two DDRII SODIMM slots operating at 266 or 333 MHz. Power management is handled by a suite of ICs including the MAX8771 for CPU core, MAX8734 and MAX1993 for system power, and MAX8632 for suspend rails. The embedded controller is a PC87551, and audio is provided by a Conexant CX20549-12 codec amplified by a MAX9755. Networking is supported by either a BCM4401 10/100 or BCM5788 1G LAN controller. The platform also includes a TI 8412 card reader and a 87383 Super I/O.
Technician FAQ
Q: What is the project code and board manufacturer for this motherboard?
A: The project code is LE4, manufactured by Quanta Computer Inc.
Q: What CPU socket and platform does this motherboard use?
A: It uses a 478 Micro-FCPGA socket for Intel Yonah/Merom CPUs, with the Calistoga northbridge and ICH7-M southbridge.
Q: What is the embedded controller (EC/KBC) on this board?
A: The embedded controller is a PC87551.
Q: What are the power management ICs used on this motherboard?
A: The power ICs include the MAX8771 for CPU core, MAX8734 and MAX1993 for system power, and MAX8632 for suspend voltage rails.
Q: What audio codec and amplifier are used?
A: The audio codec is a Conexant CX20549-12, amplified by a MAX9755.
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.
LE4
Project Code
Yonah / Calistoga / ICH-7M
CPU Platform
Yonah, Merom
CPU Model
ICH7-M
PCH / Southbridge
NVIDIA G72MP
Graphics
Integrated VGA Function / 945PM / 945GM / 940GML
Graphics
PC87551
EC / KBC
CONEXANT AUDIO / CX20549-12
Audio Codec
MAX8724
Charging / PD IC
MAX8771 / MAX8734 / MAX1993 / MAX8632
Power IC
DDRII
RAM Type
BCM4401 / BCM5788
LAN Controller
8412
Card Reader IC
87383
Super I/O
Indexed motherboard components
Open a component to see every indexed schematic that uses the same part.
LE4
Project Code
Yonah / Calistoga / ICH-7M
CPU Platform
Yonah, Merom
CPU Model
ICH7-M
PCH / Southbridge
NVIDIA G72MP
Graphics
Integrated VGA Function / 945PM / 945GM / 940GML
Graphics
PC87551
EC / KBC
CONEXANT AUDIO / CX20549-12
Audio Codec
MAX8724
Charging / PD IC
MAX8771 / MAX8734 / MAX1993 / MAX8632
Power IC
DDRII
RAM Type
BCM4401 / BCM5788
LAN Controller
8412
Card Reader IC
87383
Super I/O
Attachments
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