Lenovo ThinkStation P2 Tower Hardware Maintenance Manual page 93

Position the heat-sink-and-fan assembly on the system board. Ensure that the four screws are aligned
with the holes in the system board. Follow the following sequence to tighten the four screws to secure
the new heat-sink-and-fan assembly. Do not over-tighten the screws.
• Partially tighten screw
• Partially tighten screw
Notes:
• Apply 2.5 grams of thermal grease to the new heat-sink-and-fan assembly.
• Ensure that the heat-sink-and-fan assembly cable is toward the microprocessor fan connector on the
system board.
Replacement procedure of the 125-watt heat-sink-and-fan assembly
1. Remove the four screws that secure the heat-sink-and-fan assembly to the chassis. Then, follow the
following sequence to loosen the four screws that secure the heat-sink-and-fan assembly to the system
board. Then, lift the heat-sink-and-fan assembly off the system board.
• Partially loosen screw
• Partially loosen screw
Notes:
• Carefully loosen the four screws to avoid any possible damage to the system board. The four screws
cannot be removed from the heat-sink-and-fan assembly.
• You might have to gently twist the heat-sink-and-fan assembly to free it from the microprocessor.
• Do not touch the thermal grease while handling the heat-sink-and-fan assembly.
• In case you need to remove the chassis beam as well, ensure that the 125-watt heat-sink-and-fan
assembly has been removed before you remove the chassis beam.
2a , fully tighten screw 2b
2c , fully tighten screw 2d
2a , fully loosen screw 2b
2c , fully loosen screw 2d
, and then fully tighten screw
, and then fully tighten screw
, and then fully loosen screw
, and then fully loosen screw
.
Chapter 7 Hardware removal and installation
2a .
2c .
2a .
2c .
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