Model A1418 / Late 2012 / 2.7 & 2.9 GHz Core i5 or 3.1 GHz Core i7 Processor

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What is chin strap and it's purpose?

What is chin strap and its purpose?

When do I need to remove chin strap?

of iMac 21.5 late 2012, and early 2013

iMac 27 late 2012

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Chin strap for the 21.5" 2012 iMac.

This casing strip aligns the bottom edge of the display to the rear housing unit. The lower VHB (Very High Bond (VHB) Strips attach to it. This holds the display in place.

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The chin strap is beneath the bottom edge of the display, so the display doesn't rest on it. It seems intended to hold the EMI (electro magnetic interference) black strips that surround the inside of the iMac.

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