Lenovo ThinkServer TS460 User Manual And Hardware Maintenance Manual page 110

1. Prepare your server and remove the server cover. See "Preparing your server in advance and removing
the server cover" on page 55.
2. Lay the server on its side for easier operation.
3. If needed, remove the heat sink and fan assembly from the system board. See "Removing the heat sink
and fan assembly" on page 96.
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
Do not over-tighten the screws.
b. Partially tighten screw
Do not over-tighten the screws.
Figure 70. 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 31.
Note: If the heat sink and fan assembly cable is long, loosely wrap it.
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ThinkServer TS460 User Guide and Hardware Maintenance Manual
1 , then firmly tighten screw
3
, then firmly tighten screw
2 , and then return to screw
4
, and then return to screw
1 and firmly tighten it.
3
and firmly tighten it.