Symptom Charts
The symptom charts included in this lesson will help you diagnose specific symptoms related to the product. Because cures are listed on the charts in the order of most likely solution to least likely, try the cures in the order presented. Verify whether or not the product continues to exhibit the symptom. If the symptom persists, try the next cure.
NOTE
If a cure instructs you to replace a module and the symptom persists with the new module, reinstall the original module before you proceed to the next cure.
Apple Hardware Test
Apple Hardware Test (AHT) is a diagnostic tool for detecting issues with Apple internal hardware components such as the logic board, memory, modem, video RAM, and AirPort Card. The software does not check ...
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