3. If needed, remove the heat sink and fan assembly from the system board. See “Removing the heat
sink and fan assembly” on page 95.
Notes:
• When handling the heat sink and fan assembly, do not touch the thermal grease on the bottom of it.
• Before installing the new heat sink and fan assembly, use the cleaning pad that comes with the new
heat sink and fan assembly to wipe the thermal grease from the top of the CPU. Dispose of the
cleaning pad after all thermal grease is removed from the CPU.
4. Place the new heat sink and fan assembly on the system board so that screws on the new heat sink and
fan assembly are inserted into the corresponding holes on the system board. Note the orientation of the
new heat sink and fan assembly and ensure that you properly place it so that you can easily connect the
heat sink and fan assembly cable to the CPU fan connector on the system board.
5. Install the four screws to secure the new heat sink and fan assembly on the system board. It is
recommended that you carefully install the four screws using the following method to avoid any possible
damage to the system board.
a. Partially tighten screw
1
, then firmly tighten screw
2
, and then return to screw
1
and firmly tighten
it. Do not over-tighten the screws.
b. Partially tighten screw
3
, then firmly tighten screw
4
, and then return to screw
3
and firmly tighten
it. Do not over-tighten the screws.
Figure 68. Installing the screws to secure the heat sink and fan assembly and the backplane
6. Connect the heat sink and fan assembly cable to the CPU fan connector on the system board. See
“System board components” on page 33.
Note:
If the heat sink and fan assembly cable is long, loosely wrap it.
ThinkServer RAID Super Capacitor Module
The ThinkServer RAID Super Capacitor Module protects the cache memory on the installed ThinkServer
RAID card.
.
97
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