The is a Compal-designed motherboard. The "Rev 1.0" denotes the first major version of this design.
Use a voltage injection method (e.g., inject 1V to 2V at 2A into the rail) and look for the component that gets hot using freeze spray or a thermal camera. Step 2: Check the Power-On Sequence via the Super I/O (EC) If the laptop has no power but no short is present: Locate the chip on your patched boardview.
Step-by-Step Diagnostic Workflow Using the Patched Boardview
The is a schematic board code used for several Acer and Gateway laptop motherboards (notably the Aspire E5-571 and E5-531 series). lac701p rev 10 boardview patched
When troubleshooting this specific motherboard, the patched boardview helps accelerate diagnostics for several notorious failure points: 1. No Power / Dead Motherboard (3V/5V Rail Failure)
The primary power generation stage often fails on this board. Using the patched boardview, you can instantly locate the main PWM controller (typically a Variant of the SY8208 or similar IC) and trace the and +5VALW rails. The patch ensures that the feedback loops and enable signals (EN) are mapped accurately to the KBC (Keyboard Controller/EC chip). 2. Charging Circuit Issues (BQ Series IC)
: Start with the schematic to understand the expected power-on sequence, then use the boardview to locate each component in the chain and measure voltages. When a laptop exhibits no power and no LEDs, and a specific chip is heating up, the boardview helps identify that chip (such as PU2, the RT8243A 3.3V/5V converter). The is a Compal-designed motherboard
If the board suffered liquid damage, traces beneath components can rot away. Click on a corroded pad in the boardview software.
Understanding the native hardware architecture helps you navigate the patched boardview file more effectively during live diagnostics. Specification Intel Core i3 / i5 / i7 (Broadwell / Skylake U-Series) Memory Type DDR3L / DDR4 (Depending on specific sub-revision) Graphics Architecture Integrated Intel HD / Optional AMD Radeon Discrete GPU EC / KBC Controller ENE KB9022Q D System Architecture Compal Proprietary Design Common Failure Points and Diagnostic Steps
Some patched versions address instances where the original boardview's component labels (e.g., PU2, PQ101) were inaccurate or omitted entirely. This improves navigation and identification accuracy during repairs. Step 2: Check the Power-On Sequence via the
Use your multimeter in continuity mode. If the primary rail shorts to ground, inject a low voltage (1V to 2V, high amperage) into the main current sense resistor. Use a thermal camera or isopropyl alcohol to find the capacitor that heats up instantly. Cross-reference its ID on the patched boardview to find its exact microfarad value for replacement. Failed Charging IC
The motherboard cannot wake up without its baseline standby voltages: +3VALW and +5VALW . The dual step-down PWM controller IC.