Rev 2.0 Schematic: La-e801p

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Understanding the LA-E801P Rev 2.0 Schematic: A Guide for Board-Level Repair

If you are working on a Dell Latitude 5289 2-in-1 or a similar Kaby Lake-based laptop, you’ve likely encountered the LA-E801P Rev 2.0 motherboard. For technicians and DIY enthusiasts, the schematic for this board is the "holy grail" of documentation, turning a guessing game into a precise repair process.

This article breaks down why this specific schematic is vital and how to use it to troubleshoot common power and display issues. What is the LA-E801P?

The LA-E801P (often branded as the CAZ10) is a specialized motherboard designed for Dell’s ultra-portable 2-in-1 laptops. Because these devices prioritize a thin profile, the board is densely packed with surface-mount technology (SMT). Without the Rev 2.0 schematic, identifying a blown capacitor or a faulty MOSFET is nearly impossible by sight alone. Key Sections of the Schematic

When you open the LA-E801P Rev 2.0 PDF, you should focus on these critical power rails and stages: 1. The DC-In and Charging Circuit

Most LA-E801P failures occur at the "front door." The schematic details the Charging IC (often an ISL or BQ series). Search for: VIN, BATT+, and CHG_VCC.

Common Issue: If the laptop won't turn on, check the first and second MOSFETs (usually located near the DC jack) to see if they are passing the 19V rail through to the rest of the board. 2. The 3.3V/5V "Always-On" Rails

Before the power button is even pressed, the board must generate low-voltage standby power. Search for: +3VALW and +5VALW.

Troubleshooting: If these rails are missing, the Super I/O chip (EC) won't have power, and the laptop will appear completely "dead." 3. CPU Core Power (VCC_CORE)

Since this board supports Kaby Lake processors, the power requirements are highly regulated. The schematic shows the multi-phase buck converters responsible for feeding the CPU.

Tip: If the fan spins but there is no display, check for the CPU_VR_READY signal on the schematic. Technical Specifications for the LA-E801P Rev 2.0 Platform: Intel Kaby Lake-U Memory: LPDDR3 (Integrated on-board) GPU: Integrated Intel HD Graphics IO: USB Type-C / Thunderbolt support Tips for Effective Troubleshooting

Match the Revision: Ensure you are using the Rev 2.0 file. Using a Rev 1.0 schematic for a 2.0 board can lead to incorrect voltage readings as components may have been moved or values changed to improve stability.

Use a Boardview: A schematic tells you how components are connected, but a Boardview file (.brd or .cad) tells you where they are physically located. Using both side-by-side is the professional way to navigate the LA-E801P.

Voltage Injection: If the schematic shows a short to ground on a main rail like +1.0V_MCP, use the schematic to find a safe injection point to identify the heating component. Safety Warning

Working with the LA-E801P Rev 2.0 involves measuring live voltages. Always use a current-limited DC power supply and ensure you are grounded to prevent ESD (Electrostatic Discharge) from killing the sensitive Kaby Lake CPU.

LA-E801P Rev 2.0 schematic is a critical document for repairing HP 15-BS series laptops, which use the Compal CSL50/CSL52 motherboard architecture

. While a Rev 2.0-specific PDF is difficult to find publicly, technicians often rely on the Rev 1.0 schematic

for most power rails and signal paths, as the core engineering remain similar Key Technical Details Motherboard Model: Compal CSL50 / CSL52 Common Applications: Primarily found in laptop series Major Components: Intel Kabylake/Skylake (often U-series) Dual-channel DDR4 slots Integrated UMA or Discrete GPU options Common Repair Points

Technicians working on the Rev 2.0 board frequently encounter "no power" or "no lights" issues

. Key areas to check based on community repair logs include: Primary Power Stage:

Verify 19V at the first input MOSFET. If it's blocked, check for shorts on the (a dual transistor often marked Power Rails: Confirm the presence of 3.3V and 5V standby voltages Component Testing: Low resistance on coil may indicate a fault in the PCH or related power ICs Where to Find the Schematic la-e801p rev 2.0 schematic

You can find community-shared versions of the CSL50/CSL52 (LA-E801P) documentation on the following platforms: Free Previews: host Rev 1.0 engineering drawings Technician Archives: Large schematic repositories like the schematics|boardviews Telegram Archive often contain these RAR files for download Video Walkthroughs: Some repair channels on

provide visual diagrams and download links in their descriptions power rail on this board? schematics|boardviews| ARCHIVE – Telegram

In the world of modern laptop repair, attempting to diagnose a dead motherboard without a schematic is akin to sailing across the ocean without a compass. For one specific, highly popular motherboard—the LA-E801P Rev 2.0—this document is the holy grail.

The LA-E801P is the primary motherboard used in the Dell Vostro 14-3458, Dell Inspiron 14-3458, and several other Dell 3000 series laptops. These are workhorses found in offices, schools, and homes worldwide. Consequently, they flood repair shops with common issues: no power, no display, fan spinning but no boot, and short circuits.

If you have searched for "la-e801p rev 2.0 schematic", you likely have a non-functional board on your bench. This article will explain what this schematic contains, where to find it, how to read it, and the most common faults you can fix using it.

Before diving into the schematic, you must understand the board's layout. The LA-E801P is an Intel-based board, typically paired with:

The "Rev 2.0" designation is critical. Dell and Compal (the OEM manufacturer) released multiple revisions of this board. A schematic for Rev 1.0 may have different resistor values, missing test points, or altered power rails compared to Rev 2.0. Always ensure your schematic matches the revision printed directly on the PCB.

Symptoms: Power adapter immediately shuts down or sparks.

Using the Schematic:

The LA-E801P Rev 2.0 schematic is more than a PDF—it is a diagnostic partner. Whether you are a professional at a repair shop or a student learning micro-soldering, this document transforms random guesswork into precision engineering.

If you have a Dell Vostro 14-3458 with a missing 3.3V rail, a cracked DC jack, or a CPU that refuses to start, do not scrap the board. Find the correct Rev 2.0 schematic, invest 30 minutes in understanding the power-up sequence, and you will likely save a perfectly functional laptop from the landfill.

Next Steps:

Happy repairing.

Keywords used: la-e801p rev 2.0 schematic, Dell Vostro 14-3458 motherboard, boardview file, laptop power sequence, IT8528 EC, RT8248 power IC

The LA-E801P Rev 2.0 (code-named CSL50/CSL52) is a motherboard manufactured by Compal, primarily found in HP 15-BS series laptops. Technical Summary Manufacturer: Compal

Board Model: LA-E801P (also referred to as CSL50, CSL52, or CKL50)

Revision: 2.0 (Commonly documented as Rev 1.0, but Rev 2.0 shares significant architecture) Application: HP 15-BS Notebook series Power Architecture & Components

The schematic outlines several critical power states and rail addresses for troubleshooting:

Power Rails: Includes standard rails such as +3VL_EC, +3VS, +5V, and +3.3V. SMBus Addresses: Battery (BAT): 0x Charger (CHGR): 0x dGPU Thermal Sensor: 0x (on SMBusPort2)

Signal States: Defines behavior for SLP_S3#, SLP_S4#, and SLP_S5# across power states (S0 Full ON to S5 Soft OFF). Common Troubleshooting Points

No Power/No Lights: A frequent issue where the 19V input reaches the first MOSFET, but downstream voltages like 3.3V/5V are absent.

Thermal Issues: The PQA1 component is often identified via thermal cameras as a point of failure in "no power" scenarios. If you want, I can:

BIOS Issues: Revision 2.0 specifically has available BIOS bin files often needed alongside the schematic for full repair. Resources & Downloads

Finding the exact Rev 2.0 schematic can be difficult, as many archives list Rev 1.0 which is functionally similar for most component identification.

Schematic PDF: Can be found on technical archives like Scribd or NotebookSchematics.

Boardview: Often bundled with the schematic on repair forums like Indiafix or Facebook repair groups .

Unlocking the Secrets of LA-E801P Rev 2.0 Schematic: A Comprehensive Guide

In the world of electronics, schematics play a crucial role in understanding the design and functionality of a particular device or circuit board. For those working with the LA-E801P Rev 2.0 schematic, this article aims to provide a detailed overview of the topic, covering its significance, applications, and troubleshooting techniques.

What is an LA-E801P Rev 2.0 Schematic?

An LA-E801P Rev 2.0 schematic is a detailed diagram that represents the electrical connections and components of a specific circuit board. The "LA-E801P" refers to the board's identifier, while "Rev 2.0" indicates that it is the second revision of the design. This schematic serves as a blueprint for engineers, technicians, and manufacturers to understand the board's functionality, identify potential issues, and make necessary repairs or modifications.

Importance of LA-E801P Rev 2.0 Schematic

The LA-E801P Rev 2.0 schematic is essential for various reasons:

Applications of LA-E801P Rev 2.0 Schematic

The LA-E801P Rev 2.0 schematic is likely used in various industries, including:

Understanding the LA-E801P Rev 2.0 Schematic

To effectively work with the LA-E801P Rev 2.0 schematic, it's essential to familiarize yourself with the following components:

Troubleshooting Techniques

When working with the LA-E801P Rev 2.0 schematic, you may encounter issues that require troubleshooting. Here are some techniques to help you identify and resolve problems:

Best Practices for Working with LA-E801P Rev 2.0 Schematic

To maximize your productivity and minimize errors when working with the LA-E801P Rev 2.0 schematic:

Conclusion

The LA-E801P Rev 2.0 schematic is a vital resource for anyone working with this specific circuit board. By understanding the schematic's components, applications, and troubleshooting techniques, you can efficiently identify and resolve issues, optimize performance, and ensure the board's reliable operation. Whether you're an engineer, technician, or manufacturer, this comprehensive guide has provided you with the knowledge and best practices necessary to unlock the secrets of the LA-E801P Rev 2.0 schematic.

LA-E801P Rev 2.0 (also known by the Compal project names ) is a motherboard used primarily in HP 15-bs series laptops. The schematic details the electrical architecture for boards featuring Intel 6th (Skylake) 7th Generation (Kaby Lake) U-series processors Core System Architecture Processor Support : Integrated Intel Skylake-U or Kaby Lake-U (15W) SoC.

: Dual-channel DDR4 SO-DIMM slots supporting 1.2V modules at speeds up to 2133MHz. Graphics Options : Integrated Intel HD Graphics. Discrete (DIS) (Invoking related search suggestions

: Optional support for AMD Radeon graphics chips (e.g., R17M series) with dedicated DDR4 VRAM. Storage Interface SATA interface for standard HDDs. M.2 slot supporting SATA/PCIe SSDs. Power & Management Power Rails

: The schematic defines multiple power states including S0 (Full On), S3 (Suspend to RAM), S4 (Suspend to Disk), and S5 (Soft Off). Key IC Components Embedded Controller (EC)

: Manages keyboard, power sequencing, and thermal monitoring via SMBus. Charging IC

: Typically uses chips like the BQ series to manage 19V input and battery charging.

: Integrated Realtek RTL8111HSH Gigabit LAN or RTL8166EH 10/100 LAN connected via PCIe x1. Connectivity & Ports Display Output

: Supports internal eDP for the laptop panel and external HDMI 1.4 (up to 297MHz) or CRT/VGA via a translator chip (RTD2166). USB Support : Includes USB 3.0 (5Gb/s) and USB 2.0 (480Mb/s) ports. or a detailed power sequence diagram from this schematic?

Based on the technical documentation for the Compal LA-E801P (Rev 2.0) motherboard (commonly found in the Dell Latitude 5289 2-in-1), Core Architecture

Processor Support: Integrated Intel Kaby Lake-U (7th Gen) dual-core processors (e.g., i3, i5, i7).

Memory: Dual-channel LPDDR3 architecture, typically supporting up to 16GB soldered directly to the motherboard.

Graphics: Integrated Intel HD Graphics 620 with support for dual independent displays via USB-C/DisplayPort. Power & Management

Charging System: Features the ISL9237 or ISL95521 buck-boost battery charger, allowing charging via USB Type-C (Power Delivery). Voltage Rails: +3VLP / +5VLP: Always-on low power rails. +1.0V_VCCST: Standby voltage for the CPU. +CPU_CORE: Dynamic power delivery for the processor.

Embedded Controller (EC): MEC1416-NU, managing power sequencing, keyboard input, and thermal monitoring. Connectivity & I/O Interfaces

Storage: M.2 2280 slot supporting PCIe NVMe Gen3 x4 and SATA SSDs.

Wireless: M.2 slot for WiFi/Bluetooth combo cards (typically Intel 8265). Ports: 2x USB Type-C with Thunderbolt 3 support. 2x USB 3.0 Type-A. 1x HDMI 1.4 port. MicroSD and Micro-SIM card slots (on LTE-equipped models). Display & Audio

Display Interface: 30-pin or 40-pin eDP (embedded DisplayPort) connector supporting Full HD (1920x1080) touch panels.

Audio: Realtek ALC3253 High Definition Audio codec with integrated stereo speaker drivers and a combo headphone/mic jack. Technical Repair Indicators PCB Layers: 8-layer high-density interconnect (HDI) board.

Diagnostic: Includes a debug port (JDEBUG1) and BIOS recovery support through the SPI Flash chip (typically 16MB/128Mb).

Since the LA-E801P Rev 2.0 is not a consumer-grade product (like a sound card or GPU) but rather a bare logic board/controller PCB typically used in industrial computing, LED display control, or embedded systems, writing a "user review" requires a technical perspective.

Here is a technical review of the schematic and board design from the perspective of an electronics engineer or hardware integrator.

The features outlined above provide a general idea of what might be included in a laptop based on the LA-E801P Rev 2.0 schematic. Actual features can vary based on the specific laptop model, manufacturer customizations, and market region. This list serves as a reference for understanding the capabilities and design considerations of laptops built around this platform.

⚠️ Critical Warning: Before proceeding, understand that using board-level schematics requires intermediate soldering skills (microsoldering) and knowledge of laptop power sequencing. Incorrect probing can short adjacent pins or damage the EC/BIOS.

Verdict: A competent, utilitarian design focused on stable power distribution and basic I/O management.

Disclaimer: Always respect copyright laws. Schematics are proprietary to Dell and Compal. However, for repair purposes, many resources exist.