If Michel accidentally drops a replacement top case assembly with battery for a MacBook Pro (Retina, 15-inch, Mid 2015), what steps should he take before continuing with the repair?

Question

Options

• AVisually inspect the top case assembly with battery for damage and let it sit on the workbench for 2
• BVisually inspect the top case assembly with battery that fell to the floor and replace it with a new
• CDispose of the top case assembly with battery that fell to the floor and use an undamaged service
• DContinue using the top case assembly with battery that fell to the floor if there are no signs of

• A
  88% (15)
• C
  6% (1)
• D
  6% (1)

Explanation

Option A is correct because Apple's service guidelines require a two-part safety protocol for dropped lithium-ion battery assemblies: visual inspection first, then a mandatory waiting period (approximately 2 hours) on the workbench before proceeding. This waiting period is critical because dropped Li-ion batteries can develop internal short circuits or cell damage that triggers a delayed thermal event - even when no external damage is visible.

Why the distractors are wrong:

• B is incorrect because the procedure does not call for immediately replacing the unit with a new one; inspection and waiting must happen first before any disposal or replacement decision.
• C is incorrect because disposing of the dropped assembly immediately skips the required inspection and rest period, which are necessary before determining next steps.
• D is the most dangerous choice - continuing the repair without the waiting period risks a thermal runaway event, since internal battery damage is not always visually detectable.

Memory tip: Think of it as the "look and wait" rule - you always look (inspect) and wait (rest period) before touching a dropped battery assembly. If you skip either step, you're skipping safety.

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