HP Pavilion dm1-4000 HP Pavilion dm1 Entertainment PC - Maintenance and Servic - Page 78

Fan, System board see

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Fan Description Fan Spare part number 665000-001 NOTE: To properly ventilate the computer, allow at least 7.6 cm (3 in) of clearance on the left side 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 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. Before removing the fan, 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 38), and then remove the following components: a. Service cover (see WLAN module on page 43) b. Keyboard (see Keyboard on page 53) c. Top cover (see Top cover on page 62) d. System board (see System board on page 67) Remove the fan: 1. Turn the system board upside down, with the front toward you. 2. Disconnect the fan cable (1) from the system board. 3. Remove the two Phillips PM2.0×4.6 screws (2) that secure the fan to the system board. 70 Chapter 4 Removal and replacement procedures

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Fan
Description
Spare part number
Fan
665000-001
NOTE:
To properly ventilate the computer, allow at least 7.6 cm (3 in) of clearance on the left side
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 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.
Before removing the fan, 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
38
), and then remove the following components:
a.
Service cover (see
WLAN module
on page
43
)
b.
Keyboard (see
Keyboard
on page
53
)
c.
Top cover (see
Top cover
on page
62
)
d.
System board (see
System board
on page
67
)
Remove the fan:
1.
Turn the system board upside down, with the front toward you.
2.
Disconnect the fan cable
(1)
from the system board.
3.
Remove the two Phillips PM2.0×4.6 screws
(2)
that secure the fan to the system board.
70
Chapter 4
Removal and replacement procedures