HP ProBook 4420s HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 86

Processor, Battery, on Switch cover, Keyboard, Optical drive, Speakers, Palm rest, Top cover - core i3

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Processor NOTE: The processor spare part kit includes replacement thermal material. Description Processor (includes replacement thermal material) (not illustrated) ● Intel Arrandale 520M 2.4-GHz ● Intel Arrandale 540M 2.53-GHz ● Intel Arrandale Core 620M 2.26-GHz ● Intel Arrandale i3-330M 2.13-GHz ● Intel Arrandale i3-350M 2.26-GHz ● Intel Arrandale i5-430M 2.26-GHz Spare part number 594187-001 594188-001 587259-001 597622-001 597623-001 597624-001 Before removing the processor, 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 49). 5. Remove the following components: a. Switch cover (see Switch cover on page 51) b. Keyboard (see Keyboard on page 53) c. Optical drive (see Optical drive on page 57) d. Speakers (see Speakers on page 60) e. Palm rest (see Palm rest on page 64) f. Top cover (see Top cover on page 89) Remove the processor: 1. Position the computer right-side up with the front toward you. 2. Use a flat-bladed screwdriver to turn the processor locking screw (1) one-half turn counterclockwise until you hear a click. 78 Chapter 4 Removal and replacement procedures

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Processor
NOTE:
The processor spare part kit includes replacement thermal material.
Description
Spare part number
Processor
(includes replacement thermal material) (not illustrated)
●
Intel Arrandale 520M 2.4-GHz
594187-001
●
Intel Arrandale 540M 2.53-GHz
594188-001
●
Intel Arrandale Core 620M 2.26-GHz
587259-001
●
Intel Arrandale i3-330M 2.13-GHz
597622-001
●
Intel Arrandale i3-350M 2.26-GHz
597623-001
●
Intel Arrandale i5-430M 2.26-GHz
597624-001
Before removing the processor, 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
49
).
5.
Remove the following components:
a.
Switch cover (see
Switch cover
on page
51
)
b.
Keyboard (see
Keyboard
on page
53
)
c.
Optical drive (see
Optical drive
on page
57
)
d.
Speakers (see
Speakers
on page
60
)
e.
Palm rest (see
Palm rest
on page
64
)
f.
Top cover (see
Top cover
on page
89
)
Remove the processor:
1.
Position the computer right-side up with the front toward you.
2.
Use a flat-bladed screwdriver to turn the processor locking screw
(1)
one-half turn
counterclockwise until you hear a click.
78
Chapter 4
Removal and replacement procedures