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You require additional information about a specific problem with a customer's Mac. Which one of the
following resources is the Apple-recommended choice for researching the problem?
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Which of the following is a valid precaution you should take while working inside an iMac (27-inch, Mid
2010) system that is plugged into AC power but has not yet been powered on?
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You are troubleshooting an iMac (Early 2008) that does not power on. You notice that all diagnostic LEDs
remain off when a known-good power cord is connected to the iMac and to a known-good power outlet.
What is most likely the cause of these symptoms?
.
The Mac Pro (Early 2009) has SMC functionality split between a primary SMC on the backplane board, and
a secondary SMC on the processor board. What service issue should a technician be aware of when
servicing the Mac Pro (Early 2009)?
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The LED on a MacBook (13-inch Late 2009) MagSafe power adapter does not illuminate at all when it is
plugged into the MacBook and you know the adapter is connected to a known good power source.
What is the most likely cause of this symptom?
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You are about to replace a MacBook Air (13-inch, Late 2010) logic board. Which of the following is the most
important step you should take immediately after removing the bottom case?