HP Presario CQ57-200 Compaq Presario CQ57 Notebook PC - Maintenance and Servic - Page 80

Fan/heat sink assembly, Optical drive see

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Fan/heat sink assembly NOTE: The fan/heat sink assembly spare part kit includes replacement thermal material. Replacement thermal material is also available in the Thermal Material Kit, spare part number 646135-001. Description For use only with computer models equipped with an Intel Pentium processor and a graphics subsystem with discrete video memory For use only with computer models equipped with an Intel Pentium processor and a graphics subsystem with UMA video memory For use only with computer models equipped with an Intel Celeron processor and a graphics subsystem with UMA video memory Spare part number 646180-001 646181-001 646184-001 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/heat sink assembly, 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 35), and then remove the following components: ● Optical drive (see Optical drive on page 36) ● WLAN module (see WLAN module on page 39) ● Keyboard (see Keyboard on page 45) ● Top cover (see Top cover on page 48) ● USB board (see USB board on page 55) ● Power connector cable (see Power connector cable on page 56) ● Display assembly (see Display assembly on page 60) ● System board (see System board on page 67) 72 Chapter 4 Removal and replacement procedures

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Fan/heat sink assembly
NOTE:
The fan/heat sink assembly spare part kit includes replacement thermal material.
Replacement thermal material is also available in the Thermal Material Kit, spare part number
646135-001.
Description
Spare part number
For use only with computer models equipped with an Intel Pentium processor and a graphics
subsystem with discrete video memory
646180-001
For use only with computer models equipped with an Intel Pentium processor and a graphics
subsystem with UMA video memory
646181-001
For use only with computer models equipped with an Intel Celeron processor and a graphics
subsystem with UMA video memory
646184-001
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/heat sink assembly, 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
35
), and then remove the following components:
●
Optical drive (see
Optical drive
on page
36
)
●
WLAN module (see
WLAN module
on page
39
)
●
Keyboard (see
Keyboard
on page
45
)
●
Top cover (see
Top cover
on page
48
)
●
USB board (see
USB board
on page
55
)
●
Power connector cable (see
Power connector cable
on page
56
)
●
Display assembly (see
Display assembly
on page
60
)
●
System board (see
System board
on page
67
)
72
Chapter 4
Removal and replacement procedures