Topic: Applied Technician Scenarios — Diagnose, Justify, Repair

Essential Question:

How do technicians combine electrical knowledge, system behavior, and troubleshooting logic to diagnose real hardware failures?

🎯 Learning Intention

I will apply the six-step troubleshooting process to real device scenarios and justify my diagnosis using evidence from symptoms and system behavior.

✅ Success Criteria

• I can identify which subsystem is failing based on symptoms.
• I can justify my diagnosis using specific hardware concepts.
• I can outline a realistic repair or replacement action.
• I can explain how a technician verifies that a fix actually solved the problem.

📚 Vocabulary (Students Copy)

Subsystem — A part of the device responsible for a specific function (power, display, Wi-Fi, storage).

Diagnostic Evidence — Observable behavior that narrows down the failure.

Root Cause — The underlying problem, not just the symptom.

Intermittent Failure — A problem that appears only under certain conditions.

Board-Level Failure — A failure in soldered components requiring motherboard replacement.

📘 Focus Notes — Friday Overview (Students Copy Word-for-Word)