Acer 280 User Manual

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5.
Remove the other screw from the base of the unit, then remove the fan from the lower case.
Removing the CPU Heat Sink
1.
2.
3.
4.
5.
6.
Remove four screws and then detach the CPU heat sink from the main unit.
NOTE: Please follow the numeric orders such as 1, 2, 3, and 4 to screw the CPU heat sink to the main board.  
It is suggested that you reverse the sequence when you remove the screws.
Removing the Processor
1.