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Shockproof Guide to Working Safely on Your Mac

Jun 1, 2007

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General Best Practices

Even if you have plenty of experience taking apart computers, it can’t hurt to take a moment to review some common-sense suggestions to keep in mind while working on Macintosh hardware:

Consider making a full backup before attempting any significant hardware change.
Always properly shut down the Macintosh computer before opening its case.
As you remove screws, take care not to lose them. Place them in a small ESD-safe container or stick them on a strip of duct tape in the order they’re removed as an aid for reassembly. Some Macintosh computers have “captive” screws that can’t be removed; take care not to strip these.
If you don’t have a printed reference to guide you, take your own pictures with a digital camera to remind you of the proper placement and orientation of components.
Wearing eye protection and a nose and mouth filter, use a can of compressed air to clean dust from the interior of the Macintosh computer. Every Macintosh with a fan inside draws air through it to keep the components cool, but this can also suck in a lot of dust. That dust coats the components like a thin blanket and clogs air vents, causing the interior to operate at higher-than-ideal temperatures.

TIP

Blowing out accumulated dust can extend the useful lifespan of your Macintosh, but be sure not to blow dust into sensitive components like magnetic or optical drives.
Be gentle. If a part to be removed is stuck, wiggle it back and forth. If you’re trying to install a part and it appears not to fit, don’t force it. Double-check the orientation, look for alignment tabs, and make sure you have the right part.

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