Fan
Table 6-3 Fan description and part number
Description Spare part number
Fan L45100-001
NOTE: To properly ventilate the computer, allow at least 7.6 cm (3.0 in) of clearance on the sides of the
computer. 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 aected by
high external temperatures, system power consumption, power management/battery conservation
congurations, battery fast charging, and software requirements. Exhaust air is displaced through the
ventilation grill.
Before removing the fan, follow these steps:
1. Prepare the computer for disassembly (Preparation for disassembly on page 32).
2. Place the computer in Battery Safe mode (Battery Safe mode on page 32).
3. Remove the bottom cover (Bottom cover on page 33).
4. Remove the battery (Battery on page 41).
Remove the fan:
1. Disconnect the fan cable (1) from the system board and remove the tape (2) that secures the cable.
2. Remove the Phillips M2.0 × 4.0 screw (3) that secures the fan to the computer.
3. Slide the fan out from under the heat sink (4), and then lift the fan out of the computer (5).
Reverse this procedure to install the fan.
Component replacement procedures 43
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