Lenovo TS140 manual What to do next, Removing the heat sink and fan assembly

6.Follow this sequence to remove the four screws that secure the heat sink and fan assembly to the system board:

a.Partially remove screw

b.Partially remove screw

1 , then fully remove screw

3 , then fully remove screw

2 , and then fully remove screw

4 , and then fully remove screw

1.

3.

Note: Carefully remove the four screws from the system board to avoid any possible damage to the system board. The four screws cannot be removed from the heat sink and fan assembly.

Figure 53. Removing the heat sink and fan assembly

7.Lift the failing heat sink and fan assembly off the system board.

Notes:

a.You might have to gently twist the heat sink and fan assembly to free it from the microprocessor.

b.While handling the heat sink and fan assembly, do not touch the thermal grease on the bottom of it.

8.Place the new heat sink and fan assembly on the system board so that the four screws on the heat sink and fan assembly are aligned with the corresponding holes on the system board. Make sure that you properly place the heat sink and fan assembly so that you can easily connect the heat sink and fan assembly cable to the microprocessor fan connector on the system board.

9.Follow this sequence to install the four screws to secure the new heat sink and fan assembly. See Figure 53 “Removing the heat sink and fan assembly” on page 70.

a.Partially tighten screw 1 , then fully tighten screw

b.Partially tighten screw 3 , then fully tighten screw

Note: Do not over-tighten the screws.

2 , and then fully tighten screw

4 , and then fully tighten screw

1.

3.

10.Connect the heat sink and fan assembly cable to the microprocessor fan connector on the system board. See “Locating parts on the system board” on page 15.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

70ThinkServer TS140 User Guide