TRAINING MODULE 2: MOTHERBOARD ARCHITECTURE & POWER SEQUENCE TROUBLSHOOTING
By Elvis P. Ambait
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About Course
This module provides an in-depth understanding of laptop motherboard architecture and the systematic approach to diagnosing power-related issues. Key topics include:
- Motherboard Block Diagram: Identifying major components such as the CPU, PCH, VRMs, and power rails.
- Power Sequence Fundamentals: Understanding the step-by-step activation of power rails, from DCIN to CPU VCORE.
- Voltage Regulation & Power Rails: Analyzing 3V/5V standby power, SIO triggering, and buck converters.
- BIOS & Embedded Controller (EC) Role: How firmware influences power sequencing and system initialization.
- Troubleshooting Techniques: Using multimeters and oscilloscopes to diagnose missing voltages and faulty components.
- Common Faults & Solutions: Identifying symptoms of power failures, such as no power, no display, or random shutdowns.
Course Content
MOTHERBOARD CHIPSET Generations
Power Rails & Troubleshooting
power Sequence ( wistron, quanta, compal, inventec, asus)
Power map
Signals, Powergood and Reset
PCH signals
CORE VOLTAGES : SVI & IMVP TROUBLESHOOING
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