HP Presario CQ45-300 Compaq Presario CQ45 Notebook PC - Maintenance and Servic - Page 90

System board

Get HP Presario CQ45-300 - Notebook PC PDF manuals and user guides View all HP Presario CQ45-300 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 90 highlights

System board Description Spare part number System board for use in computer models equipped with discrete graphics subsystems (includes thermal material) System board for use in computer models equipped with UMA graphics subsystems (includes thermal material) System board for use only in computer models with AMD processors (includes thermal material) 486725-001 486726-001 492256-001 When replacing the system board, be sure that the following components are removed from the defective system board and installed on the replacement system board: ● RTC battery (see RTC battery on page 52) ● Memory modules (see Memory module on page 54) ● WLAN module (see WLAN module on page 49) ● Modem module (see Modem module on page 76) Before removing the system board, 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 43). 5. Remove the following components: a. Hard drive (see Hard drive on page 46) b. Optical drive (see Optical drive on page 44) c. Keyboard (see Keyboard on page 56) d. Switch cover (see Switch cover on page 58) e. Speaker assembly (see Speaker assembly on page 60) f. Display assembly (see Display assembly on page 62) g. Top cover (see Top cover on page 69) Remove the system board: 1. Turn the computer upright with the right side toward you. 82 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
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
System board
Description
Spare part number
System board for use in computer models equipped with discrete graphics subsystems (includes
thermal material)
486725-001
System board for use in computer models equipped with UMA graphics subsystems (includes
thermal material)
486726-001
System board for use only in computer models with AMD processors (includes thermal material)
492256-001
When replacing the system board, be sure that the following components are removed from the defective
system board and installed on the replacement system board:
●
RTC battery (see
RTC battery
on page
52
)
●
Memory modules (see
Memory module
on page
54
)
●
WLAN module (see
WLAN module
on page
49
)
●
Modem module (see
Modem module
on page
76
)
Before removing the system board, 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
43
).
5.
Remove the following components:
a.
Hard drive (see
Hard drive
on page
46
)
b.
Optical drive (see
Optical drive
on page
44
)
c.
Keyboard (see
Keyboard
on page
56
)
d.
Switch cover (see
Switch cover
on page
58
)
e.
Speaker assembly (see
Speaker assembly
on page
60
)
f.
Display assembly (see
Display assembly
on page
62
)
g.
Top cover (see
Top cover
on page
69
)
Remove the system board:
1.
Turn the computer upright with the right side toward you.
82
Chapter 4
Removal and replacement procedures