Lenovo ThinkStation P350 Tiny, User Manual, Page: 78 / 100

Note: Align the new rubber mounts of the new rear fan with the corresponding holes in the chassis. Push the
rubber mounts through the holes. Pull the tips of the rubber mounts until the rear fan is secured in place.
Heat-sink-and-fan assembly
Prerequisite
Before you start, read Generic Safety and Compliance Notices , and print the following instructions.
The heat sink might be very hot. Before you open the computer cover, turn off the computer and wait several
minutes until the computer is cool.
For access, do the following:
1. Remove these parts in order, if any:
• “Computer cover” on page 42
• “Optical drive” on page 43
• “Front bezel” on page 45
• “Optical drive cage” on page 60
2. Disconnect the heat-sink-and-fan assembly cable from the microprocessor fan connector on the system
board.
Replacement procedure of the Type-1 heat-sink-and-fan assembly
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.
72
P350 User Guide