Lenovo ThinkCentre neo 50s Gen 3, User Manual

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Replacement procedure
1. 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 1a , fully loosen screw 1b , and then fully loosen screw 1a .
• Partially loosen screw
1c
, fully loosen screw
1d
, and then fully loosen screw
1c
.
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.
2. 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 2a , fully tighten screw 2b , and then fully tighten screw 2a .
• Partially tighten screw 2c , fully tighten screw 2d , and then fully tighten screw 2c .
Notes:
• Apply appropriate amount 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.
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neo 50s Gen 3 User Guide