Compaq Presario CQ56-100 Compaq Presario CQ56 Notebook PC and HP G56 Notebook - Page 74

System board

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System board NOTE: The system board spare part kit includes UMA graphics subsystem memory and replacement thermal material. Description PCA UMA system board (AMD) PCA UMA system board (Intel) Spare part number 623915-001 623909-001 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 69) ● Memory modules (see Memory module on page 44) ● WLAN module (see WLAN module on page 42) ● Fan/heat sink assembly (see Fan/heat sink assembly on page 71) ● Processor (see Processor on page 75 Before removing the system board: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn on the computer, 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 following components: a. Battery (see Battery on page 36) b. Hard drive module (see Hard drive on page 37) c. WLAN module (see WLAN module on page 42) d. Memory module (see Memory module on page 44) e. Optical drive (see Optical drive on page 39) f. Keyboard (see Keyboard on page 46) g. Top cover (see Top cover on page 49) h. Display assembly (see Display assembly on page 59) i. Fan/heat sink assembly (see Fan/heat sink assembly on page 71) j. Processor (see Processor on page 75 66 Chapter 4 Removal and replacement procedures

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System board
NOTE:
The system board spare part kit includes UMA graphics subsystem memory and
replacement thermal material.
Description
Spare part number
PCA UMA system board (AMD)
623915-001
PCA UMA system board (Intel)
623909-001
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
69
)
●
Memory modules (see
Memory module
on page
44
)
●
WLAN module (see
WLAN module
on page
42
)
●
Fan/heat sink assembly (see
Fan/heat sink assembly
on page
71
)
●
Processor (see
Processor
on page
75
Before removing the system board:
1.
Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn on
the computer, 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 following components:
a.
Battery (see
Battery
on page
36
)
b.
Hard drive module (see
Hard drive
on page
37
)
c.
WLAN module (see
WLAN module
on page
42
)
d.
Memory module (see
Memory module
on page
44
)
e.
Optical drive (see
Optical drive
on page
39
)
f.
Keyboard (see
Keyboard
on page
46
)
g.
Top cover (see
Top cover
on page
49
)
h.
Display assembly (see
Display assembly
on page
59
)
i.
Fan/heat sink assembly (see
Fan/heat sink assembly
on page
71
)
j.
Processor (see
Processor
on page
75
66
Chapter 4
Removal and replacement procedures