La-e801p Rev 2.0 Schematic Jun 2026

Input MOSFETs (usually dual N-channel MOSFETs configured as reverse-polarity and over-voltage protection), current sensing resistor ( PR302 or similar depending on exact schematic notations).

The "LA-E801P" is the board number (PCB code) for a series of motherboards used in several HP laptop models, including the , HP 250 G6 , and HP 240 G6 lines, from around 2017 onwards. Specifically, the versions include CSL50 and CSL52 . Understanding the "REV 2.0" designation is crucial, as it signifies a specific revision of the board, and earlier versions (like REV 1.0) have different schematics.

These are activated only when the motherboard receives the signal to turn on. Core Rails: These include the CPU core voltage ( VCOREcap V sub cap C cap O cap R cap E end-sub

Locate the magnetic lid switch line. It must read high ( ). If it reads low (

), the EC assumes the laptop screen is closed and ignores the power button entirely. la-e801p rev 2.0 schematic

In the schematic, look for signals like ACIN (AC Adapter Detect), (Lid switch), and

As the 85-page document loaded, the chaotic green fiberglass of the motherboard transformed into a logical city of traces and gates.

The current sense resistor (PR301 or similar) tells the charging IC how much current is being drawn. Check if you have ~ 19.5V at the drain of the first MOSFET. If you drop to 0V, you may have a shorted capacitor to ground or a blown MOSFET. 2. The 3.3V / 5V Always Rails

19.5V enters through the DC-in connector and encounters the reverse-polarity and over-voltage protection MOSFETs (typically PQ1 and PQ2). Input MOSFETs (usually dual N-channel MOSFETs configured as

Generated right after passing through the input protection MOSFETs (typically dual N-channel transistors like the PE642DT ). This acts as the main high-voltage highway that feeds all buck converters on the board.

A critical chart showing the order in which voltages must turn on.

LA-E801P Rev 2.0 (also known by the Compal project names ) is a motherboard schematic used primarily in HP 15-BS series laptops and some Dell Latitude 3580

You need the Rev 1.0 schematic. The Rev 1.0 board is a Sky Lake-U base, while the Rev 2.0 is a Kaby Lake platform. The physical components and pin connections are likely different, making them incompatible. Understanding the "REV 2

Typically managed by an ENE or Microchip SMSC EC chip, which handles power sequencing, keyboard inputs, thermal monitoring, and battery metrics. 2. Core Power Rails and Sequencing

The Compal LA-E801P (often labeled as C5V01) is a widely deployed laptop motherboard found across several generations of Acer Aspire and Nitro series laptops, most notably the Acer Aspire A515-51 and A515-51G. Laptop repair technicians, hardware enthusiasts, and reverse engineers heavily rely on the schematic diagram and boardview files for this specific revision (Rev 2.0) to diagnose complex hardware failures, trace power rails, and perform component-level micro-soldering.

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.

If you have a specific problem with your motherboard, I can help you pinpoint the exact area of the schematic to inspect. If you would like to proceed, let me know:

(Invoking related search suggestions...)

For a technician, a schematic is a live tool used to save hours of diagnostic work. Here is how to use it to approach a few real-world problems: