HP 9470m i7 Win8 D3K33UT#ABA manual Heat sink, d. WLAN module see WLAN module on page

Heat sink

NOTE: The heat sink spare part kit includes replacement thermal material.

Description	Spare part number
Heat sink	707907-001

Before removing the heat sink, follow these steps:

1.Turn off 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 the power from the computer by unplugging the power cord from the computer.

3.Disconnect all external devices from the computer.

4.Remove the battery (see Battery on page 41), and then remove the following components:

a.Hard drive cover (see Hard drive cover on page 47)

b.Hard drive (see Hard drive/SSD drive on page 48)

c.Service cover (see Service cover on page 53)

d.WLAN module (see WLAN module on page 58)

e.WWAN module (see WWAN module on page 56)

f.Fan (see Fan on page 68)

g.Keyboard (see Keyboard on page 60)

h.Base enclosure (see Base enclosure on page 63)

i.System board (see System board on page 69)

Remove the heat sink:

1.Following the 1, 2, 3, 4 sequence stamped into the heat sink, loosen the four captive Philllips screws (1) that secure the heat sink to the system board.

72 Chapter 4 Removal and replacement procedures