3. Disconnect the heat sink and fan assembly cable from the microprocessor fan connector on the system
board. See “Locating parts on the system board” on page 71.
4. Follow this sequence to remove the four screws that secure the heat sink and fan assembly to the
system board:
a. Partially remove screw
1
, then fully remove screw
2
, and then fully remove screw
1
.
b. Partially remove screw
3
, then fully remove screw
4
, and then fully remove screw
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 103. Screws that secure the heat sink and fan assembly
5. Lift the heat sink and fan assembly with the fan duct 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. When handling the heat sink and fan assembly, do not touch the thermal grease on the bottom
of the heat sink and fan assembly.
Chapter 10
.
Replacing FRUs (machine types: 2113, 2114, 2115, 3515, 4860, 4863, 4865, 4866,
4869, 5100, 10BS, 10BT, and 10BU)
159
Summary of Contents for 10BN
Page 6: ...iv ThinkCentre M78 Hardware Maintenance Manual ...
Page 8: ...2 ThinkCentre M78 Hardware Maintenance Manual ...
Page 15: ...Chapter 2 Safety information 9 ...
Page 19: ...Chapter 2 Safety information 13 ...
Page 20: ...1 2 14 ThinkCentre M78 Hardware Maintenance Manual ...
Page 21: ...1 2 Chapter 2 Safety information 15 ...
Page 26: ...1 2 20 ThinkCentre M78 Hardware Maintenance Manual ...
Page 27: ...1 2 Chapter 2 Safety information 21 ...
Page 30: ...24 ThinkCentre M78 Hardware Maintenance Manual ...
Page 34: ...28 ThinkCentre M78 Hardware Maintenance Manual ...
Page 60: ...54 ThinkCentre M78 Hardware Maintenance Manual ...
Page 140: ...134 ThinkCentre M78 Hardware Maintenance Manual ...
Page 203: ......
Page 204: ......