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)
: 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?
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.
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 .
The LA-E801P Rev 2.0 is a motherboard schematic specifically designed for the Dell Latitude 5285 2-in-1 laptop. This document is an essential technical resource for electronics repair, providing the electrical blueprint for the "Kaby Lake" generation motherboard. Technical Specifications & Details
Device Compatibility: Primarily found in the Dell Latitude 5285.
Platform Architecture: Supports Intel Kaby Lake-U processors.
Board ID: Compal LA-E801P (often referred to as the "Kaby Lake-U LPDDR3" platform).
Revision: 2.0 (dated approximately late 2016 to early 2017). Key Components Mapped in the Schematic
The schematic covers several critical subsystems necessary for troubleshooting power or logic issues:
Power Rails: Detailed diagrams of the G3, S5, S3, and S0 power states, including the +3VALW and +5VALW standby rails.
Charging Circuit: Information on the battery charging IC and the DC-in negotiation (USB-C Power Delivery). Memory: Wiring for integrated LPDDR3 RAM.
I/O Interfaces: Pinouts for the detachable keyboard connector, M.2 SSD slots, and the display (eDP) interface. Common Uses for the Schematic
Component Identification: Finding the exact values of burnt resistors or capacitors (e.g., "RC12" or "CC5"). la-e801p rev 2.0 schematic
Voltage Injection: Locating appropriate test points to identify short circuits on main power lines like B+.
Signal Tracing: Troubleshooting "No Power" or "No Display" symptoms by tracing signals like PM_PWRBTN# or PLTRST#. Where to Find the File
Since these documents are proprietary to Compal and Dell, they are typically found on specialized technician forums and database sites:
BadCaps.net: Often hosts these in the "Schematic Requests" section.
VinaFix: A common repository for BIOS and schematics (often requires a subscription).
Lab One Systems: Frequently lists Compal-based board diagrams for download.
The LA-E801P Rev 2.0 is a motherboard schematic manufactured by Compal (internal codes CSL50/CSL52) primarily used in HP 15-bs and 15-bw series laptops. Key Technical Specifications
According to documentation from Scribd and other technical archives:
Platform Architecture: Supports 6th and 7th Gen Intel Core processors (Kaby Lake/Skylake-U).
Memory: Features two DDR4 SO-DIMM slots supporting dual-channel memory at speeds up to 2133MHz at 1.2V.
Graphics: Available in both UMA (Integrated) and Discrete (R17M-M1-30 or R17M-M2-50) configurations using PCIe 3.0 (8Gb/s). Power Rails: Main input: 19V. System rails: 3.3V and 5V (Always-on). DDR Power: 1.2V. Common Issues & Repair Insights
Technical community reviews from forums like Elvikom highlight specific failure points:
Power Inrush Faults: A common failure point is the PQA1 chip (PE642DT dual transistor), which often causes "no power" or "no lights" symptoms.
Short Circuits: Technicians often report low resistance on the source side of the first MOSFET (PQB1) or the PQA1 chip, even when the MOSFET itself tests fine.
Graphics Conversion: If the discrete GPU is shorted, some technicians perform a "Non-Graphic Conversion" by disconnecting specific power supplies (e.g., VGA GFX, Graphic Core Regulator) to allow the board to run on integrated graphics. Where to Find the Schematic Full Documents: Often hosted on Scribd or Studocu.
Technician Archives: Community repositories like schematics|boardviews Telegram frequently share both the PDF schematic and the .BRD boardview files.
Are you currently troubleshooting a specific power rail or looking for a component value on this board? schematics|boardviews| ARCHIVE – Telegram
+1.05V_PCH rail. Replace all 0805 caps near PCH.SPI_PROG (JSPI1) for external flashing.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.
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
I'm looking for a specific type of information!
It seems you're looking for the schematic for the LA-E801P Rev 2.0 motherboard.
The LA-E801P Rev 2.0 is a motherboard model, and schematics for specific motherboards are usually only available through a few channels:
If you're unable to find the schematic through these channels, you can also try: LA-E801P Rev 2
Here's a sample post you can use as a starting point:
Title: LA-E801P Rev 2.0 Schematic Request
Text: "Hello everyone,
I'm looking for the schematic for the LA-E801P Rev 2.0 motherboard. I've searched online, but I couldn't find a reliable source. Has anyone come across a download link or knows where I can obtain it?
Any help or guidance would be greatly appreciated.
Thanks in advance!"
Finding the exact schematic for the Compal LA-E801P (used in HP 15-BS and Acer Swift 3 series) is notoriously difficult, as many repair forums and archives only host
Technicians often use the Rev 1.0 schematic as a close substitute for component identification, though minor layout changes exist. Available Documentation Sources Rev 1.0 Schematic (Most Common): provides a viewable PDF of the CSL50/CSL52 (LA-E801P) engineering drawings.
hosts a document labeled as LA-E801P, though it is often the earlier revision. Archives & Communities: Telegram Repositories: Large schematic archives like Schematics|Boardviews| ARCHIVE files for the Repair Forums: Technical discussions on sites like
confirm that finding Rev 2.0 specifically is a common hurdle for HP laptop repairs. Troubleshooting Context is frequently found in laptops and is associated with common power issues: No Power / No Lights: Often linked to the 19V rail failing at the first Mosfet. Graphic Conversions: Some guides detail converting the
from discrete graphics to non-graphic (UMA) when the GPU shorts
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.
Alex stared at the Dell Latitude 5480 on his workbench, its power light blinking a rhythmic, mocking amber. The board inside—a Compal LA-E801P Rev 2.0—was a graveyard of tiny surface-mount components. He didn’t just need a fix; he needed the map. The Digital Ghost
In the world of board repair, a schematic is the difference between surgery and guesswork. Alex spent hours scouring deep-web technician forums and Russian hardware repositories. Finally, on a site indexed only by its IP address, he found it: LA-E801P_R20_20161215.pdf. No power, BQ24735 burns: Replace PU2, PQ30, PQ31, and the 2
As the 85-page document loaded, the chaotic green fiberglass of the motherboard transformed into a logical city of traces and gates.
The Power Rails: He saw the 19V primary line branch into the 3.3V and 5V "always-on" states.
The Gatekeeper: He located the PU701, the power management chip, orchestrating the voltage dance.
The Suspect: A tiny capacitor, PC1024, sits right on the edge of the CPU power rail. The Investigation
Using the schematic's coordinate system, Alex pinned down the "G3" sector of the board. With his multimeter in hand, he began the hunt.
Input Test: 19V was present at the DC jack. The "front door" was open.
The Drop-off: He probed the drain of the first MOSFET. Zero volts.
The Culprit: Following the schematic to the charging circuit, he found a charred resistor, PR702. It was supposed to be 10 ohms; it was now an infinite void. The Resurrection 💡
The schematic told him exactly what PR702 was: a 0402-sized resistor, 1/16W. He raided a "donor" board from a broken HP, harvested a matching organ, and soldered it under the microscope.
He plugged in the adapter. The mocking amber blink was gone. A steady, cool white light took its place.
Alex hit the power button. The fan spun a lazy circle, then roared to life. On the screen, the Dell logo flickered into existence. The LA-E801P was no longer a brick; it was a computer again.
If you'd like more technical details on this specific board or repair, let me know: The exact voltage readings for the power-up sequence? Common failure points for the Latitude 5480 series?
How to read component labels (like PQ vs. PC) on the schematic?
Compal LA-E801P Rev 2.0 (also known by codenames ) is a motherboard found in the series and laptops. This board typically supports Intel 6th (Skylake-U) 7th (Kaby Lake-U) Generation processors and features discrete AMD Radeon graphics or integrated Intel graphics. HP Support Community Core Technical Specifications : Intel Kaby Lake/Skylake-U 15W. : Dual-channel DDR4-2133MHz SO-DIMM, operating at 1.2V. : Options include integrated Intel HD Graphics or discrete AMD Radeon R5/R7 : SATA interface and support for M.2 SSDs (PCIe/SATA). Networking
: Realtek RTL8111HSH Gigabit or RTL8166EH 10/100 Ethernet controller. HP Support Community Power Rail Analysis & Troubleshooting
Understanding the power sequence is vital for diagnosing "no power" or "no display" issues on this board. La E801p | PDF - Scribd
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.