HP FN037UAABA System board, a. Battery see Battery on page b. Hard drive see Hard drive on page

3.Disconnect the modem module cable (3) from the modem module.

4.Remove the modem module.

Reverse this procedure to install the modem module.

System board

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

Description	Spare part number
System board for use in computer models with dual core processors (includes RTC battery)	493980-001
System board for use in computer models with quad core processors (includes RTC battery)	501508-001
System board for use only in computer models with Core2 Duo processors in the People's Republic	509762-001
of China and Russia (includes RTC battery)
System board for use only in computer models with Core2 Quad processors in the People's Republic	509763-001
of China and Russia (includes RTC battery)

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 following components:

a.Battery (see Battery on page 41)

b.Hard drive (see Hard drive on page 45)

c.Bluetooth module (see Bluetooth module on page 48)

d.Optical drive (see Optical drive on page 53)

Component replacement procedures 85