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Saturday, July 31, 2010

Magic Trackpad Teardown

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Edit Step 1 — Magic Trackpad Teardown

  • The Magic Trackpad is the first full desktop trackpad that supports a full set of gestures, including click, scroll, swipe, and rotate, all available at the tip of your fingers.

  • Requirements:

    • Mac desktop or laptop.

    • Bluetooth connectivity.

    • Mac OS X 10.6.4 or later.

    • And of course, batteries! (Apple Battery Charger not included).

  • As the rumors confirmed, the Magic Trackpad is designated Model A1339.

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Edit Step 2

  • The Magic Trackpad is 80% larger than the trackpad included in current MacBook Pro models.

  • It features the same aluminum design as its wireless keyboard counterpart, allowing for the perfect union of typing and gestures.

  • Let us not forget the main attraction, which is the 0.5 mm thick, capacitive touch, wear-resistant glass surface.

  • That's all good, but what lies inside?

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Edit Step 3

  • Removing the batteries is about as straightforward as it can get. Give a twist to the battery door and the two AA batteries slide right out.

    • Check out those square threads! While square threads have the highest mechanical efficiency of all lead screws, their difficulty of manufacturing makes them prohibitive for most applications.

    • Kudos, Apple, for sweating the details.

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Edit Step 4

  • Time to get our hands dirty!

  • Use a plastic opening tool to pry the lower panel away from the adhesive securing around its left, right, and top edges.

    • Don't pry up along the bottom. There are a bunch of retaining clips.

  • After slicing through most of the adhesive, the lower panel lifts right off.

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Edit Step 5

  • And there's......not really that much to this thing.

  • After a good amount of quasi-non-destructive prying, the inner spacer can be removed from the trackpad.

    • This spacer prevents the highly unlikely event of squeezing the lower panel against the logic board hard enough to damage it.

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Edit Step 6

  • Next, disconnect the two ribbon cables connecting the capacitive touch pad to the logic board.

    • These things are ridiculously thin and are stuck to the underside of the touch pad. If you plan to remove them, proceed with caution.

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Edit Step 7

  • We've noticed a trend about Apple's newer products: thin and pretty = not user serviceable. The Magic Trackpad is no exception.

  • After using a heat gun to warm up the adhesive, the touch pad can be carefully pried off the aluminum chassis.

    • This is not for the faint of heart. A copious amount of heat, guitar picks, and plastic opening tools were required to make this thing budge.

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Edit Step 9

  • To completely remove the logic board, you must first de-solder the four wires leading to the battery connector/status LED.

  • After removing two Phillips screws, the logic board can be separated from the chassis.

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Edit Step 10

  • At the heart of the Magic Trackpad's logic board lies a Broadcom BCM2042 for Bluetooth connectivity.

    • This is the same chip used by the Magic Mouse for data transmission.

  • We found a Broadcom BCM5974 touch screen controller chip that provides Multi-touch functionality.

    • This is the same chip you'll find in the iPhone, iPod Touch, and MacBook Air.

  • Also, an SST 25WF020 provides 2 Mbit of serial flash memory.

  • This appears to be a TI CD3238, which has been identified by Hearst as a RS232 line driver/receiver. It was also in the original iPhone with a BCM5973A.

  • The back of the logic board features nothing but blackness and glue.

Edit Step 11

  • And there it lies: the Magic Trackpad in nine difficult-to-disassemble pieces.

  • Keep an eye on our teardown page for an inside look at the latest gadgets!


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