HP 4416S, 4515S, 4415S manual System board, Description Spare part number

System board

NOTE: The system board spare part kit includes replacement thermal material.

Description	Spare part number
System board for use in computers with a WWAN module that use AMD Mxxx processors
UMA graphics subsystem memory	585218-001
Discrete graphics subsystem memory	585220-001
System board for use in computers without a WWAN module that use AMD Mxxx processors
UMA graphics subsystem memory	585219-001
Discrete graphics subsystem memory	585221-001
System board for use in computers with a WWAN module that use AMD ZM, RM, QL, or SI
processors:
Discrete graphics subsystem memory	535803-001
System board for use in computers without a WWAN module that use AMD ZM, RM, QL, or
SI processors:
UMA graphics subsystem memory	574505-001
Discrete graphics subsystem memory	574506-001

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 60).

5.Remove the following components:

a.Switch cover and keyboard (see Switch cover and keyboard on page 61)

b.Speakers (see Speakers on page 69)

c.WWAN module (see WWAN module on page 70)

d.Palm rest (see Palm rest on page 71)

e.WLAN module (see WLAN module on page 76)

f.Hard drive (see Hard drive on page 74)

g.Optical drive (see Optical drive on page 66)

h.Display assembly (see Display assembly on computers with 15.6-in displays on page 78 or Display assembly on computers with 14.0-in displays on page 91)

i.Top cover (see Top cover on page 84)

106 Chapter 4 Removal and replacement procedures