HP Presario CQ43-400 Compaq Presario CQ43 Notebook PC Maintenance and Service - Page 88

Fan/heat sink assembly, and then remove the following components

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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 numbers 650277-001 (for use only with computer models equipped with an AMD processor) and 646135-001 (for use only with computer models equipped with an Intel processor). Description For use only with computer models equipped with an AMD processor Fan/heat sink assembly for use only with computer models equipped with an Intel Core i5 or i3 processor and a graphics subsystem with discrete video memory Fan/heat sink assembly for use only with computer models equipped with an Intel Core i5 or i3 processor and a graphics subsystem with UMA video memory 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 647316-001 646182-001 646183-001 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 41), and then remove the following components: ● Optical drive (see Optical drive (select models only) on page 49) ● WLAN module (see WLAN module on page 42) ● Keyboard (see Keyboard on page 51) ● Top cover (see Top cover on page 54) ● USB board (see USB board on page 63) ● Power connector cable (see Power connector cable on page 64) 80 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 numbers
650277-001 (for use only with computer models equipped with an AMD processor) and 646135-001
(for use only with computer models equipped with an Intel processor).
Description
Spare part number
For use only with computer models equipped with an AMD processor
647316-001
Fan/heat sink assembly for use only with computer models equipped with an Intel Core i5 or i3
processor and a graphics subsystem with discrete video memory
646182-001
Fan/heat sink assembly for use only with computer models equipped with an Intel Core i5 or i3
processor and a graphics subsystem with UMA video memory
646183-001
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
41
), and then remove the following components:
●
Optical drive (see
Optical drive (select models only)
on page
49
)
●
WLAN module (see
WLAN module
on page
42
)
●
Keyboard (see
Keyboard
on page
51
)
●
Top cover (see
Top cover
on page
54
)
●
USB board (see
USB board
on page
63
)
●
Power connector cable (see
Power connector cable
on page
64
)
80
Chapter 4
Removal and replacement procedures