Apple 13 INCH LATE 2006 用户手册

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MacBook (13-inch) Take Apart — General Information 
12
Logic Board Springs
Caution: When servicing the computer, be especially careful when working near the two springs 
on the logic board. Although the springs are flexible, they can be inadvertently torn, bent, or 
broken if a cable gets caught on them. A logic board might be considered unusable with one or 
more damaged springs. Check the structural integrity of the springs before completing a repair.