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Diagnostic process
Diagnostic process
Diagnostic process
Diagnostic process
Diagnostic process
Diagnostic process
Diagnostic process
Diagnostic process
Diagnostic process
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Diagnostic process

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  • 1. Unit 14 Technical Fault Diagnosis and Remedy The Diagnostic Process
  • 2. The Diagnostic Process
    • The diagnostic process is when you find faults in a structured manner.
    • A Structured manner means you follow a set of instructions which lay out what to do, which order to do it in and how to respond.
    • We often use a Systematic Approach…
  • 3. The Diagnostic Process
    • A Systematic Approach will take more time but will be more thorough.
  • 4. The Diagnostic Process
    • A Systematic Approach?
      • A sequence to be followed step by step.
    • A Systematic approach will allow you to check interrelated parts without missing something.
    • Will allow someone else to take over from you if necessary.
  • 5. The Diagnostic Process
    • Fault Diagnosis Methods
      • Substitution
      • Replication
      • Testing
      • Environment Change
  • 6. The Diagnostic Process
    • Substitution
      • A part is swapped with another that is known to work. The part could be a complete system.
      • Substitution can provide a very quick resolution to the problem.
  • 7. The Diagnostic Process
    • Replication
      • Where a fault is duplicated elsewhere in a controlled manner. This way you know exactly what the cause is and can explain it.
      • Usually takes place in the ICT Support area.
  • 8. The Diagnostic Process
    • Testing
      • Every ICT job should be tested afterwards to ensure it works as expected.
      • This area will be explored in more detail later.
  • 9. The Diagnostic Process
    • Environment Change
      • Faulty equipment is moved to another place for testing.
      • Eg if a computer does not log on to a network move it to a another point to see if it will work there.
      • Testing in a different environment is always useful as the difference can be looked to see if there is a trigger.

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