Sun Microsystems V20z Server User Manual


 
Chapter 4 Maintaining the Sun Fire V40z Server 4-57
9. Carefully position the heatsink on the CPU, aligning it with the mounting posts to
reduce movement after it makes initial contact with the layer of thermal grease.
The cooling pipes on the heatsink should be facing toward the outside of the
machine.
Caution – If the heatsink is moved too much during its installation, the layer of
thermal grease may become uneven, leading to component damage.
10. After the heatsink is correctly aligned, reinsert the hold-down assembly crossbar
through the heatsink fins (see
FIGURE 4-34):
a. Insert the crossbar from the front side of the heatsink and align it with the
alignment mark on the base of the heatsink.
b. Push the crossbar through the heatsink fins and insert the crossbar end into the
tab on the hold-down assembly.
c. Tighten the captive screw that secures the crossbar.
11. Replace the rear fan-cage assembly.
12. Replace fans 9 through 11 to the front fan-cage assembly.
13. Replace the main air baffle.
14. Before re-installing the cover on the server, check the routing of all cables for
obstructions.