NOTE: To properly ventilate the computer, allow at least a
The computer uses an electric fan for ventilation. The fan is controlled by a temperature sensor and is designed to turn on automatically when high temperature conditions exist. These conditions are affected by high external temperatures, system power consumption, power management/battery conservation configurations, battery fast charging, and software requirements. Exhaust air is displaced through the ventilation grill located on the left side of the computer.
Heat sink
NOTE: All heat sink spare part kits include replacement thermal material.
Description | Spare part number |
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Heat sink |
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Before removing the heat sink, follow these steps:
1.Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2.Disconnect all external devices connected to the computer.
3.Disconnect the power from the computer by first unplugging the power cord from the AC outlet, and then unplugging the AC adapter from the computer.
4.Remove the battery (see Battery on page 42).
5.Remove the bottom door (see Bottom door on page 49).
6.Remove the fan (see Fan on page 64).
Remove the heat sink:
1.Position the computer
2.In the order indicated on the heat sink, loosen the captive Phillips screws (1) that secure the heat sink to the system board. The discrete heat sink has six screws, while the UMA heat sink has four screws. Both heat sinks are illustrated below.
3.Lift the right side of the heat sink up at an angle (2).
Component replacement procedures 65
