This is an AMD board (likely Ryzen 5 5500U or 7 5700U). Vcore is generated by a multiphase controller (e.g., MP2955).
You cannot rely on software to tell you which board you have. Flip the motherboard over. Near the RAM slots or under the M.2 SSD slot, you will see white silkscreen text.
If you want, I can:
Related search suggestions (you can ignore if not needed): gs44b schematic, gs54b board pinout, NM-C561 module pinout, NM-C561 datasheet.
The GS44B / GS54B (NM-C561) schematic and boardview are essential technical documents for repairing the Lenovo IdeaPad S145-15IKB
laptop motherboard. These files provide a detailed roadmap of the motherboard's architecture, including its Intel Kaby Lake (KBL-U) CPU, DDR4 memory, and optional Nvidia discrete graphics. Technical Specifications Overview
The NM-C561 motherboard is an OEM design by LCFC and typically includes the following core components as seen in its block diagrams: Processor: Intel KBL-U22/U42 series. Memory: Standard DDR4 SODIMM slots.
Graphics: Options for UMA (Integrated) or DIS (Discrete) using Nvidia N16S-GTR (MX130) or N17S-G1 (MX110).
I/O Support: SATA, USB, HDMI, Audio, LAN, and WLAN interfaces. Key Troubleshooting Use Cases
Technicians often use the schematic and boardview together to diagnose common hardware failures:
Numpad Failure: A known logic-based issue on the NM-C561 board where the numpad stops working due to "Board ID" logic errors. This cannot be fixed by replacing the keyboard or IO chip without understanding the schematic logic.
Power Rail Issues: Schematics are used to trace the 19V primary power rail and identify shorted components, such as MOSFETs (e.g., near Jumper PJ 5301) or power ICs.
Boardview Visualization: The NM-C561 Boardview allows for precise physical location of tiny capacitors, resistors, and test points that are otherwise difficult to find on the PCB. Where to Find Schematics
You can access these technical documents through several specialized repositories: NM-C561 REV 1.0 BOARDVIEW Lenovo S145-15IKB
The GS44B GS54B NM-C561 schematic is the primary technical blueprint for the Lenovo IdeaPad S145-15IKB laptop motherboard. This document, often paired with a boardview file, is essential for professional technicians performing component-level repairs, such as fixing "no power" issues or liquid damage. Core Technical Specifications
The NM-C561 motherboard is an LC Future Center (LCFC) design that supports several 8th and 10th generation Intel platforms. Key components include:
Processor: Supports Intel Whiskey Lake-U or Kaby Lake-U processors.
Memory: Integrated DDR4 memory with one SO-DIMM expansion slot.
Graphics: Available in UMA (Integrated) or Discrete configurations using Nvidia N16S-GTR (MX130) or N17S-G1 (MX110) chips.
Embedded Controller (EC): Utilizes the ITE IT8586E chip for power management and keyboard control. Storage: Support for both SATA HDD and NVMe SSD interfaces. Critical Power Rails and Signal States
Understanding the power sequence is vital for troubleshooting. The NM-C561 schematic outlines several "Always-On" (ALW) and "Suspend" (VS) rails:
+VALW Rails: Essential standby voltages including +3VALW and +5VALW. These must be present even when the laptop is off for the power button to function. Primary Rails: +1.2V: DDR4 memory power. +1.05VALW: PCH/CPU standby power.
+VCC_CORE: Main CPU core voltage, active only after the system triggers a full power-on state.
Sleep States: The schematic defines signals like SLP_S3#, SLP_S4#, and SLP_S5# to manage the transition between active, sleep, and hibernation modes. Common Repair Scenarios
Technicians typically use the NM-C561 schematic and boardview to solve the following common failures:
No Power/Dead Laptop: Often caused by short circuits in the +19V (B+) input rail or failure of the 3.3V/5V buck converter IC.
No Charging: Involves checking the charging IC circuit and the communication between the battery and the ITE IT8586E EC chip.
No Display: Using the schematic to trace the eDP (Embedded DisplayPort) connector pins to ensure backlight voltage and data signals are reaching the screen. Where to Find the Files gs44b gs54b nm-c561 schematic
Since these are proprietary documents, they are typically found on specialized technician forums or paid schematic databases. You can often find the NM-C561 Schematic or Boardview on platforms like NotebookSchematics, The Tech Stall, or Scribd.
Are you currently troubleshooting a specific power issue or looking for a component location on this board? GS44B/GS54B Schematic Overview | PDF - Scribd
The GS44B/GS54B NM-C561 refers to a motherboard schematic and boardview typically used for the Lenovo IdeaPad S145-15IKB laptop. This documentation is a critical resource for board-level repair, hardware diagnostics, and circuit analysis for this specific model line. Technical Overview
The schematic covers a wide range of hardware configurations based on the Intel Kaby Lake (KBL) platform. Key components detailed in the diagram include: Processor Support: Intel KBL-U22 and U42 series CPUs.
Graphics: Support for discrete NVIDIA graphics, specifically the N16S-GTR and N17S-G1 models.
Memory: DDR4 RAM architecture, which often includes a combination of soldered-on memory and one upgradeable slot.
Connectivity: Extensive maps for SATA, USB, LAN, Audio, and other peripheral ports. Repair Use Cases
Diagnostic Precision: Technicians use the NM-C561 schematic to trace voltage rails and identify short circuits in the power sequence.
Component Identification: The Boardview file allows for the visual location of specific resistors, capacitors, and ICs (like the ITE EC controller) on the physical PCB.
Optimization: Engineers may use these layouts to identify design inefficiencies or potential performance bottlenecks in the laptop's circuitry. Resource Availability
These documents are proprietary and often require access through professional technical platforms like Scribd or specialized databases like NotebookSchematics and Laptop-Schematics.
Are you troubleshooting a specific hardware failure, such as a "no power" issue or a charging problem, for this motherboard? GS44B/GS54B Schematic Overview | PDF - Scribd
The story of the GS44B/GS54B NM-C561 is a classic "detective case" for laptop repair technicians. This specific motherboard code refers to the Lenovo IdeaPad S145-15IKB (and its siblings like the V15-IKB), a popular budget-friendly machine that frequently ends up on repair benches with power issues. The Scene of the Crime: "The Dead Laptop"
Technicians often encounter this board when it shows "no sign of life." Without the schematic, a repair is like navigating a maze in the dark. The GS44B/GS54B NM-C561 schematic acts as the blueprint, revealing a complex web of Intel KBL-U CPUs, DDR4 memory rails, and optional Nvidia discrete graphics. The Investigation: Following the Voltage
When a technician opens the schematic for this board, they are looking for specific "clues" in the power sequence:
The 19V Entry: The first checkpoint is usually the PJ 5301 jumper. If the 19V main power doesn't reach the dreno of the MOSFETs here, the laptop is effectively "starved" of electricity.
The Gatekeeper: On these boards, the MOSFETs often use "N-channel" logic, meaning their "gates" need about 24V to let the 19V through. A technician uses the schematic to find why this higher voltage (often generated by a charge pump) is missing.
The "ACOK" Mystery: A common plot twist in these repairs is a missing ACOK signal. Without this signal, the motherboard’s brain (the Super I/O chip) doesn't realize a charger is even plugged in. The Resolution: The Boardview Advantage
Because modern motherboards are packed with tiny, unlabeled components, experts often pair the schematic with a Boardview file. While the schematic shows how parts connect, the Boardview shows where they are physically located on the PCB. Finding a microscopic blown resistor or a shorted capacitor becomes a matter of precision rather than guesswork.
By following these technical blueprints, technicians can often "resurrect" a machine that otherwise would have been thrown away, turning a "dead" piece of hardware back into a functional tool. GS44B/GS54B Schematic Overview | PDF - Scribd
GS44B/GS54B NM-C561 refers to the motherboard used in the Lenovo IdeaPad S145-15IKB laptop series. This board is manufactured by LC Future Center (LCFC)
and typically features Intel Kaby Lake or Whiskey Lake processors. Schematic & Boardview Resources
For technical repair and component identification, the following files are standard for this model: Schematic Diagram
: A 60+ page PDF detailing circuit paths, power rails, and component values (e.g., resistors, capacitors). BoardView File : Often in
format, this provides a visual map of the physical PCB to locate specific components. Bios/EC Firmware : Binary files (
) required for flashing the BIOS or Embedded Controller if the board is bricked. Accessing the Files
These documents are proprietary engineering materials from LCFC and are generally found on specialized technician platforms: GS44B/GS54B Schematic Overview | PDF - Scribd This is an AMD board (likely Ryzen 5 5500U or 7 5700U)
GS44B/GS54B NM-C561 is a motherboard schematic and boardview reference for the Lenovo IdeaPad S145-15IKB laptop. Manufactured by LC Future Center (LCFC)
, this board is a common platform for mid-range IdeaPad models released around 2019. Technical Specifications & Core Architecture The NM-C561 motherboard is designed to support both Intel Kaby Lake-U (7th Gen) Kaby Lake-R (8th Gen) processor series. Chipset/CPU: Intel KBL-U22/U42. Integrated Available in both (Integrated) and
(Discrete) configurations. The discrete models typically use NVIDIA GeForce MX110/MX230 (N16S-GTR/N17S-G1) with GDDR5 memory. Embedded Controller (EC): Managed by the ITE IT8586E Connectivity: Includes SATA, USB, audio, and LAN interfaces. Essential Repair Resources
For technicians, the schematic and boardview are critical for diagnosing power issues or component failures. Schematic Diagram:
A detailed 60+ page PDF mapping all electrical circuits and power rails. Boardview File: Often provided in
format, this allows visual tracing of components like resistors, capacitors, and ICs directly on a digital PCB representation. Power Flow & Sequence:
These diagrams help troubleshoot "No Power" states by showing the step-by-step voltage initiation (e.g., verifying if the input reaches key test points like Where to Find Files
These documents are proprietary but can be accessed through various technician-focused repositories: overview of the GS44B/GS54B schematic for viewing. Laptop-Schematics: Provides the full NM-C561 schematic and boardview package for purchase. Laptopserviz: Lists individual NM-C561 schematic Frequently hosts Rev 0.1 schematics for community use. Are you troubleshooting a specific power issue , like the board not turning on or having no display? GS44B/GS54B Schematic Overview | PDF - Scribd
NM-C561 (GS44B/GS54B) is a motherboard produced by LC Future Center (LCFC) primarily for the Lenovo IdeaPad S145-15IKB
. As a technical resource, the schematic and accompanying boardview are essential tools for repair technicians diagnosing power issues, component failures, or board-level damage in this series of laptops. Motherboard Overview
The NM-C561 platform is designed for mid-range performance, featuring the following core specifications identified in its schematic: Processor: Supports Intel Kaby Lake-U (KBL-U22/U42) CPUs. Utilizes DDR4 RAM architecture.
Offers configurations with discrete NVIDIA graphics (N16S-GTR or N17S-G1) alongside integrated Intel graphics. Connectivity:
Includes standard peripheral support for SATA, USB, LAN, and audio. Technical Resource Review
Technicians typically use these documents for several high-impact repair tasks: Voltage Rail Troubleshooting:
The schematic allows for tracing critical power paths (such as the 3.3V/5V always-on rails) to identify short circuits. Boardview Visualization:
Because physical motherboards often lack component labels (silk-screen), the NM-C561 Boardview
is used to locate specific resistors, capacitors, and ICs mentioned in the schematic. Component Identification:
It provides the exact values and ratings for surface-mount components, which is necessary when a part is burnt and unreadable. Availability and File Details The NM-C561 schematic is typically distributed as a PDF. Common Version:
Revision 0.1 is the most widely documented in technical archives. File Size: Approximately 2.17MB for the boardview package.
Technical documents can be found on specialist platforms like LaptopSchematics.com NotebookSchematics
The GS44B/GS54B NM-C561 schematic and boardview files are essential technical documents for repairing the Lenovo IdeaPad S145-15IKB
laptop. These files provide the electrical blueprints needed to troubleshoot power rails, identify faulty components, and trace signal paths on the motherboard. Technical Document Details
The schematic for this specific LCFC motherboard (NM-C561) typically covers:
Power Sequence: Detailed diagrams of how the board powers up from the DC jack to the CPU. Voltage Rails: Locations and specifications for +3VALWpositive 3 cap V cap A cap L cap W +5VALWpositive 5 cap V cap A cap L cap W , and CPU core voltages.
Component Map: A boardview file (usually in .brd or .cad format) that allows you to click on a component to see all its connected traces.
Pinouts: Connections for the keyboard, LCD connector, battery, and BIOS chip. Where to Find the Files
Since these are proprietary documents, they are primarily hosted on specialized technician forums and laptop repair databases. You can find the GS44B GS54B NM-C561 schematic on platforms such as: Related search suggestions (you can ignore if not
NotebookSchematics: Offers a direct download for the schematic and boardview set.
BadCaps.net: A popular community forum where technicians often share BIOS dumps and schematics for Lenovo models.
Vinafix: A comprehensive library for mobile and laptop repair files (often requires a subscription).
If you are currently troubleshooting this board, let me know:
What is the primary symptom (e.g., no power, no display, or water damage)? Which voltage rails have you already measured?
The schematic you are looking for is for the Lenovo IdeaPad 3-14IML05 / 3-15IML05 Go to product viewer dialog for this item.
(and related models) motherboard. The "proper piece" or technical designation for this board is the Lenovo NM-C561 (GS44B/GS54B) .
You can find this schematic and the associated boardview files on technical repair forums and database sites:
BadCaps.net: A reliable community-driven forum where users often share BIOS dumps and schematics for the Go to product viewer dialog for this item.
VinaFix.com: A comprehensive database for laptop repair technicians that hosts the GS44B/GS54B NM-C561 Rev 1.0 schematic.
Bios-Mods: Often contains boardview files and schematic PDFs for Lenovo IdeaPad 3 series motherboards. Technical Specifications for the Board: Platform: Intel Comet Lake-U (10th Gen)
Graphics: Integrated Intel UHD or Discrete NVIDIA GeForce options Memory: DDR4 (often with 4GB soldered + 1 slot) Controller: ITE IT8227E-128 or similar Super I/O
Are you troubleshooting a power-on issue or looking for specific component values on this board?
Unlocking the Power of Your Device: A Comprehensive Guide to GS44B, GS54B, and NM-C561 Schematic
In the world of electronics, schematic diagrams play a crucial role in understanding the inner workings of complex devices. For individuals working with devices such as the GS44B, GS54B, and NM-C561, having access to accurate and detailed schematics is essential for troubleshooting, repair, and even modification. In this article, we will delve into the world of these devices, exploring their applications, features, and most importantly, the GS44B, GS54B, NM-C561 schematic.
What are GS44B, GS54B, and NM-C561?
The GS44B, GS54B, and NM-C561 are likely model numbers of devices used in various industries, including electronics, telecommunications, and industrial automation. While specific information about these devices is limited, their widespread use suggests that they are critical components in many systems.
The Importance of Schematic Diagrams
Schematic diagrams are the blueprints of electronic devices, providing a visual representation of the components and their connections. For technicians, engineers, and hobbyists, these diagrams are indispensable tools for:
Finding the GS44B, GS54B, NM-C561 Schematic
Locating the schematic for these devices can be a challenge. Here are some strategies for finding the GS44B, GS54B, NM-C561 schematic:
Understanding the Schematic
Once you have obtained the GS44B, GS54B, NM-C561 schematic, the next step is to learn how to read and interpret it. Here are some basics:
Working with the GS44B, GS54B, NM-C561 Schematic
With the schematic in hand, you can now proceed with your project, whether it's repair, troubleshooting, or modification. Always ensure you have a good understanding of the device's operation and safety precautions to avoid damage or injury.
In conclusion, the GS44B, GS54B, and NM-C561 schematic diagrams are crucial for anyone working with these devices. By understanding how to find, read, and use these schematics, individuals can unlock the full potential of their devices, ensuring they operate efficiently and effectively.