The LA-D401P motherboard schematic is a vital technical document for diagnosing and repairing specific Dell Latitude 3560 laptop motherboards. This Compal-manufactured board (p/n: Love14 BDW 14290-2) utilizes the Intel Broadwell U-processor platform and DDR3L memory. Key Specifications & Architecture Platform: Intel Broadwell ULT (Ultra-Low Voltage). Memory: Supports DDR3L SODIMM RAM.

Common Design Elements: Like other 5000-series Dell boards (e.g., the similar LA-D071P for the Inspiron 5559), it features an integrated CPU/PCH and typically utilizes a MEC1404 EC/KBC for power management and keyboard control.

Graphics: Available in both Integrated (UMA) and Discrete (Nvidia) configurations. Essential Schematic Diagrams

A complete LA-D401P Schematic package typically includes several critical sub-diagrams for troubleshooting:

Power Block Diagram: Maps the distribution of primary (DC-in) and secondary (3.3V/5V ALW) power rails.

Timing Diagrams: Essential for fixing "no power" issues by showing the sequence from G3 (off) to S0 (fully powered).

SMBus/Thermal Block Diagrams: Help identify why a laptop might be throttling or shutting down due to sensor failures. Professional Repair Resources

For advanced board-level repair, technicians often combine the circuit schematic with:

BoardView Files: Visual maps of the PCB layout that allow you to locate physical components (like mosfets or capacitors) mentioned in the schematic.

Schematic Repositories: Sites like Laptop-Schematics and ChinaFix provide downloadable PDF versions of these documents for specific Dell models like the Latitude 3560.

Pro Tip: Always disconnect the battery before testing power rails to prevent accidental short circuits during probing. DELL Latitude 5490 LA-F401P Schematic - ChinaFix

The is a motherboard manufactured by Compal, primarily used in the HP Spectre Pro 13 G1 laptop. Finding a free, direct download for the full schematic (circuit diagram) is difficult as they are often treated as confidential trade secrets by manufacturers like Compal. Motherboard Specifications

Based on technical documentation for the HP Spectre 13-v series typically features:

Processor: 6th Generation Intel Core (e.g., i7-6500U), which is soldered to the board (SOC). Graphics: Integrated Intel HD Graphics 520.

Memory: On-board LPDDR3-1866 dual-channel RAM, not customer upgradeable, with a maximum capacity of 8GB.

Display: Supports 13.3-inch FHD WLED panels via eDP+PSR connections. Repair & Maintenance Review For technicians or DIY enthusiasts, the presents several challenges:

High Complexity: The board is extremely thin and highly integrated. Common repairs involve replacing burnt MOSFETs or MOSFET drivers that deliver Vcore voltage to the CPU.

Data Risks: Because storage (SSD or eMMC) is often soldered directly to the motherboard on these premium ultrabooks, a motherboard failure or replacement typically results in complete data loss.

Disassembly Requirements: You will need specialized tools, including a Torx T6 screwdriver and plastic prying tools.

Safety Tip: Always disconnect the battery cable from the motherboard before testing or performing repairs to prevent short circuits.

Report: LA-D401P Schematic Analysis

Introduction

The LA-D401P is a laptop motherboard schematic that requires analysis and reporting. This report aims to provide an overview of the schematic, highlighting key components, and potential areas of interest.

Schematic Overview

The LA-D401P schematic appears to be a comprehensive diagram of the laptop motherboard, detailing various components, connectors, and circuitry. The schematic is divided into several sections, including:

Power Supply Section: This section outlines the power delivery circuitry, including the power adapter, battery management, and voltage regulators.
CPU and Memory Section: This section details the CPU, memory (RAM), and associated circuitry, including the CPU socket, memory slots, and voltage regulators.
Graphics and Display Section: This section covers the graphics processing unit (GPU), display connectors (e.g., LCD, HDMI), and associated circuitry.
Storage and Peripherals Section: This section includes the storage interfaces (e.g., SATA, PCIe), USB ports, and other peripherals (e.g., audio, LAN).

Key Components

The following key components are identified in the LA-D401P schematic:

CPU: Intel Core i5/i7 processor ( socket FCBGA1165)
GPU: NVIDIA GeForce graphics processing unit
Memory: DDR3 RAM (2-4 slots)
Storage: SATA and PCIe interfaces for storage devices
Power Management: Intel PMIC (Power Management Integrated Circuit)
Voltage Regulators: Multiple voltage regulators for CPU, GPU, and other components

Potential Areas of Interest

The following areas may be of interest for further analysis or troubleshooting:

Power Supply Issues: The power supply section appears to be a critical area, with multiple voltage regulators and power management components.
GPU and Display Issues: The graphics and display section may be prone to issues related to GPU overheating, display connector problems, or graphics driver conflicts.
Memory and CPU Issues: The CPU and memory section may experience issues related to CPU overheating, memory compatibility, or voltage regulator problems.

Conclusion

The LA-D401P schematic provides a detailed overview of the laptop motherboard's components and circuitry. By analyzing the schematic, we have identified key components and potential areas of interest for further analysis or troubleshooting. This report serves as a starting point for more in-depth analysis, repair, or modification of the LA-D401P motherboard.

Recommendations

Further Analysis: Perform a more detailed analysis of the power supply section to understand the power delivery and management.
Troubleshooting: Investigate common issues related to the GPU and display section, such as display flickering or GPU overheating.
Component Identification: Verify the component identifiers and part numbers for accurate procurement and replacement.

Limitations

This report is based on a visual analysis of the LA-D401P schematic and may not reflect the actual performance or issues with the motherboard. Further analysis and testing are recommended to confirm the findings.

Future Work

Future work may include:

Schematic reverse-engineering: Create a detailed, interactive schematic diagram for easier navigation and analysis.
Component-level analysis: Perform in-depth analysis of specific components, such as the power management IC or voltage regulators.
Troubleshooting guide: Develop a comprehensive troubleshooting guide for common issues related to the LA-D401P motherboard.

The Compal LA-D401P is the motherboard (mainboard) for the HP Spectre 13-v000nx notebook series. While a formal "review" of the schematic itself is not a standard consumer product review, technical feedback from the repair community indicates it is a vital resource for diagnosing power issues on this specific ultrabook. Technical Overview

Target Device: Designed for the HP Spectre 13-v series, specifically models like the 13-v000nx featuring 7th Gen Intel Core i5 processors.

Complexity: As an ultrabook board, the LA-D401P features highly integrated components. Repair guides emphasize the need for professional tools like Torx T6 and Philips screwdrivers, plus thermal paste for reassembly.

Repair Context: The schematic is primarily used to troubleshoot hardware failures when the device refuses to boot or has display issues (e.g., checking the fuse location for the monitor backlight). Availability and Community Resources

If you are looking for the schematic to perform a repair, it is typically found in specialized technician forums rather than standard retail sites.

Repair Communities: Sites like Badcaps and Lab-One Forum are primary hubs where technicians share and discuss boardview files and schematics for Compal boards.

Manuals: For physical disassembly, the official HP Maintenance and Service Guide provides the necessary structural layout, though it does not contain the full electrical schematic.

Parts: If the board is beyond repair, replacement motherboards are occasionally listed on niche electronics marketplaces like XFurbish.

Pro Tip: Before diving into the schematic, always disconnect the battery and check the power adapter output. Many "motherboard failures" on this series are actually resolved by simple power rail resets or BIOS updates.

Are you troubleshooting a specific power issue or looking for a download link for the PDF? HP Spectre 13-v000nx Notebook Motherboard LA-D401P

Proceed?

4. Main SMPS and Inverter Output

This is the heavy lifter. It takes the high DC voltage and converts it into the voltage required for the panel (often 24V for the mainboard logic and specific voltages for the OLED panel driver).

Schematic Tip: Identify the main transformer. The secondary side of the schematic is where you will find the Schottky diodes and filter capacitors that create the final DC output.

4. The Boardview (.BRD file)

Use a boardviewer like OpenBoardView or FlexBV. Load the LA-D401P.brd file.

Search for a component: Type "PQ101" – the software zooms to that MOSFET.
Find a test point: Looking for +3VALW? The boardview shows you exactly which capacitor or resistor pad to probe.

Fault 2: Powers On, No Display (Fan Spins)

Suspect: Memory training failure or VCC_GFX short.
Check: All coils for voltage. Using the LA-D401P schematic, find PL901 (VCC_CORE) and PL902 (VCC_GFX). If VCC_GFX is missing, the GPU might be defective or the VR_EN signal is missing.
Resolution: Reball the PCH or replace the BIOS (U23). A corrupted ME Region in the BIOS is common. You will need a verified LA-D401P BIOS dump.

[patched] - La-d401p Schematic