NEC Express5800 Series User Manual page 51

Chapter 2 Preparations
10. Close the socket lever marked with "
11. Put the heat sink on the CPU and fix the heat sink with four screws.
Temporarily tighten the four screws diagonally, then tighten them securely.
Make sure that the screw aligns with the screw hole. If not, the screw may damage the motherboard.
12. Make sure that the heat sink is installed on a level with the motherboard.
→" to fix it.
3
1
4
REAR
FRONT
Note
• 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.
– All screws are not completely tightened.
• Do not move the secured heat sink.
Express5800/R120g-1E User's Guide
2
1. Installing Internal Options
51