NEC N8100-1417F User Manual page 337

3.
Fix the heat sink with four screws.
NOTE:
the figure below. Then, secure them tightly.
4.
Make sure that the heat sink is level with the mother board.
NOTES:
If the heat sink is not level, remove it, and then install it again. The
following probably causes the heat sink not to be level:
– The CPU is not positioned correctly.
– The heat sink is not completely secured with screws.
Do not move the secured heat sink.
Removal
Remove the heat sink from the CPU in the reverse procedure of the installation.
Temporarily secure the four screws in the order as shown in
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Upgrading Your Server 9-79
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