HP CQ56-124CA, CQ56-110US, CQ56-109WM, CQ56-100XX manual System board, Description Spare part number

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