NEC Express5800 Series User Manual page 305

place.
12.
Return the socket lever back to its original place.
13.
Place the heat sink on the CPU and secure it with 4
Loosely fasten the screws in the cross-coupling way,
then fasten them tightly.
IMPORTANT:
Place the heat sink so that its corners will not
bump against the parts on the motherboard.
14.
Check that the heat sink is attached to the mother board horizontally.
IMPORTANT:
System Upgrade 8-29
screws.
and