HP 4411S, FN068UTABA, 4410S manual Heat sink and fan, Description Spare part number

Heat sink and fan

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

Description	Spare part number
Heat sink for use in computers with UMA graphics subsystems	535859-001
Heat sink for use in computers with discrete graphics subsystems	535767-001
Fan	535766-001

Before removing the heat sink, 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 63).

5.Remove the following components:

a.Switch cover and keyboard (see Switch cover and keyboard on page 64)

b.Speakers (see Speakers on page 73)

c.Optical drive (see Optical drive on page 69)

d.Palm rest (see Palm rest on page 75)

e.Top cover (see Top cover on page 90)

Remove the heat sink:

NOTE: Steps 1 through 3 apply to computers with discrete subsystem memory on the system board. Steps 4 through 6 apply to computers with UMA subsystem memory. Step 7 shows how to remove the fan from the heat sink.

1.Position the computer right-side up with the front toward you.

2.Following the sequence stamped into the heat sink, loosen the seven screws (1), (2), (3), (4), (5),

(6), (7) around the processor.

106 Chapter 4 Removal and replacement procedures