HP Pavilion g4-2200 HP Pavilion g4 Notebook PC Maintenance and Service Guide - Page 89

Fan and heat sink, Remove the system board see

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Fan and heat sink NOTE: The fan and heat sink spare part kits include replacement thermal material. Description Fan Heat sink for use only with computer models equipped with UMA video memory for BGA-based systems Heat sink for use only with computer models equipped with UMA video memory Heat sink for use only with computer models equipped with switchable discrete video memory for BGA-based systems Heat sink for use only with computer models equipped with switchable discrete video memory Spare part number 680551-001 711471-001 680549-001 711472-001 680550-001 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 and heat sink, follow these steps: 1. Shut down the computer. 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 40). 5. Remove the service door (see Service door on page 41). 6. Remove the optical drive (see Optical drive on page 42). 7. Remove the hard drive (see Hard drive on page 45). 8. Remove the keyboard (see Keyboard on page 52). 9. Remove the top cover (see Top cover on page 55). 10. Remove the system board (see System board on page 76). Remove the fan and heat sink: 1. Turn the system board upside down, with the front toward you. 2. Disconnect the fan cable (1) from the system board. CAUTION: To prevent damage to heat sinks and/or processors, loosen/tighten captive screws in sequence as numerically labeled. NOTE: The heat sink and fan appearance and the number of screws may be different from the heat sink and fan pictured. ENWW Component replacement procedures 81

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Fan and heat sink
NOTE:
The fan and heat sink spare part kits include replacement thermal material.
Description
Spare part number
Fan
680551-001
Heat sink for use only with computer models equipped with UMA video memory for BGA-based
systems
711471-001
Heat sink for use only with computer models equipped with UMA video memory
680549-001
Heat sink for use only with computer models equipped with switchable discrete video memory for
BGA-based systems
711472-001
Heat sink for use only with computer models equipped with switchable discrete video memory
680550-001
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 and heat sink, follow these steps:
1.
Shut down the computer.
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
40
).
5.
Remove the service door (see
Service door
on page
41
).
6.
Remove the optical drive (see
Optical drive
on page
42
).
7.
Remove the hard drive (see
Hard drive
on page
45
).
8.
Remove the keyboard (see
Keyboard
on page
52
).
9.
Remove the top cover (see
Top cover
on page
55
).
10.
Remove the system board (see
System board
on page
76
).
Remove the fan and heat sink:
1.
Turn the system board upside down, with the front toward you.
2.
Disconnect the fan cable
(1)
from the system board.
CAUTION:
To prevent damage to heat sinks and/or processors, loosen/tighten captive screws
in sequence as numerically labeled.
NOTE:
The heat sink and fan appearance and the number of screws may be different from the
heat sink and fan pictured.
ENWW
Component replacement procedures
81