HP LW475UA#ABA HP Pavilion dm4 Entertainment PC - Maintenance and Service Guid - Page 82

Fan/heat sink assembly, Optical drive see

Get HP LW475UA#ABA PDF manuals and user guides View all HP LW475UA#ABA manuals
Add to My Manuals
Save this manual to your list of manuals

Page 82 highlights

Fan/heat sink assembly NOTE: All fan/heat sink assembly kits include replacement thermal material. Description Fan/heat sink assembly for use in models with UMA graphics Fan/heat sink assembly for use in models with discrete graphics Fan/heat sink assembly for use in models with discrete graphics with processor Spare part number 636940-001 636939-001 642731-001 NOTE: To properly ventilate the computer, allow at least a 7.6 cm (3 inch) clearance on the right side and rear panel 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 38). 5. Remove the following components: a. Hard drive (see Hard drive on page 45) b. WLAN module (see WLAN module on page 42) c. Optical drive (see Optical drive on page 47) d. Keyboard (see Keyboard on page 49) e. Top cover (see Top cover on page 51) f. Speaker assembly (see Speaker assembly on page 70) g. Power connector cable (see Power connector cable on page 66) h. USB board (see USB board on page 65). i. Display assembly (see Display assembly on page 58) j. Bluetooth module removal (see Bluetooth module on page 68) k. System board (see System board on page 72) Remove the fan/heat assembly (fan/heat sink appearance may vary): 74 Chapter 4 Removal and replacement procedures

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
Fan/heat sink assembly
NOTE:
All fan/heat sink assembly kits include replacement thermal material.
Description
Spare part number
Fan/heat sink assembly for use in models with UMA graphics
636940-001
Fan/heat sink assembly for use in models with discrete graphics
636939-001
Fan/heat sink assembly for use in models with discrete graphics with processor
642731-001
NOTE:
To properly ventilate the computer, allow at least a
7.6 cm
(3 inch) clearance on the right
side and rear panel 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
38
).
5.
Remove the following components:
a.
Hard drive (see
Hard drive
on page
45
)
b.
WLAN module (see
WLAN module
on page
42
)
c.
Optical drive (see
Optical drive
on page
47
)
d.
Keyboard (see
Keyboard
on page
49
)
e.
Top cover (see
Top cover
on page
51
)
f.
Speaker assembly (see
Speaker assembly
on page
70
)
g.
Power connector cable (see
Power connector cable
on page
66
)
h.
USB board (see
USB board
on page
65
).
i.
Display assembly (see
Display assembly
on page
58
)
j.
Bluetooth module removal (see
Bluetooth module
on page
68
)
k.
System board (see
System board
on page
72
)
Remove the fan/heat assembly (fan/heat sink appearance may vary):
74
Chapter 4
Removal and replacement procedures