Rev 1.0 Schematic: La-9413p

Supports Intel Core i3, i5, and i7 [4th Generation] (Socket rPGA-947 ). Chipset: Intel QM87 / Lynx Point.

A crucial distinction of the LA-9413P variant is its implementation of an eDP (Embedded DisplayPort) interface rather than an older LVDS setup.

The Compal LA-9413p Rev 1.0 motherboard features a logical, highly structured design typical of the Intel Haswell era. Successful diagnostic work relies on maintaining a rigorous step-by-step approach: isolating the short circuit on the high-voltage rails, ensuring the ENE KB9012 controller initializes its always-on power states, and validating that the power-on sequence finishes cleanly with the release of the platform reset signal. Armed with the official schematic diagram, a digital multimeter, and an adjustable laboratory bench power supply, technicians can confidently resolve the vast majority of faults native to this hardware platform.

Note: Always ensure you are downloading a trustworthy file and scan for viruses. Tips for Working with Schematics la-9413p rev 1.0 schematic

Finding the correct schematic can be challenging. Here's a breakdown of the primary resources:

Turn off all power, set your multimeter to resistance mode (low ohms), and check all major coils (PL401, PL402, PL501, etc.) against ground. A reading close to 0 ohms on a non-CPU rail indicates a shorted component (usually a ceramic capacitor or high-side MOSFET).

When troubleshooting this board, the schematic helps you navigate several critical "power rails" and logic circuits. 1. The Power Input Circuit (DC-IN) Supports Intel Core i3, i5, and i7 [4th

Fault 2: Motherboard Powers Up briefly, then Shuts Down (Looping)

A: Yes, but you also need a multimeter. Look for corrosion on the power ICs listed in the schematic. Clean with isopropyl alcohol and check resistance to ground using the schematic's resistance tables.

Voltage steps down from the external power adapter via the DC-In jack or charges up from the battery array. It clears two protection P-channel MOSFETs before forming the primary system rail, marked in the manual as . If a ceramic filter capacitor shorts to the ground anywhere on the board, the charging controller will trip, choking the +B rail down to 0V. 2. The Always-On Standby Rails ( +3VALW and +5VALW ) The Compal LA-9413p Rev 1

If you are a laptop repair technician, engineer, or enthusiast working on a Dell Inspiron 15 (3541, 3542, 3543) or Vostro 3546 series laptop, the is an essential resource. This document is a detailed blueprint of the motherboard, providing crucial information about component locations, signal paths, voltage rails, and power sequences needed to diagnose complex issues.

The later revisions, 1.1, 1.2, had removed the copper spiral. But 1.0 was the trigger.

The Compal LA-9413P (often labeled as V5WE2) is a widely deployed laptop motherboard. It primarily powers the Acer Aspire E1-570, E1-572, and V5-572 series notebooks. When these laptops fail to power on, charge, or display video, a schematic diagram becomes an indispensable tool for component-level repair.

Follow the "Power Sequence Block Diagram" included in complete schematic packages to see exactly which chips must turn on before the CPU initializes. Go to product viewer dialog for this item.

If you possess the .brd , .bdv , or .asc file for LA-9413P: