TYAN S5162, Manual

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To remove the heatsink you will need to twist each of the black locking pegs
until they spring up and unlock the heatsink from the motherboard.
Remember to connect the power supply for the fan to complete the installation.
Some heat sinks require a bracket to be installed beneath the motherboard
before the heat sink is placed on the top side of the motherboard. To install a
heat sink like this:
1
Turn the motherboard upside down and place the rear bracket in position
with the mounting posts poking through the corresponding holes in the
motherboard.
2 Turn the motherboard the right way up, holding the bracket in place.
3 Place the heat sink assembly on top of the processor.
It should match up with the mounting holes on the rear bracket.
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