System board

NOTE: All system board spare part kits include replacement thermal material and VGA support bracket.

NOTE: Models that support quad-core processors have four memory slots. Models that support dual- core processors have two memory slots.

Description

Spare part number

 

 

For use with dual-core processors

690642-001

 

 

For use with quad-core processors

690643-001

 

 

For use with dual-core processors in China and Russia

696440-001

 

 

For use with quad-core processors in China and Russia

696441-001

 

 

Before removing the system board, follow these steps:

IMPORTANT: Make special note of each screw and screw lock size and location during removal and replacement.

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 46).

5.Remove the service door (see Service door on page 52).

6.Remove the following components:

a.Hard drive (see Hard drive on page 63).

b.Upgrade bay device (see Upgrade bay device on page 68).

c.Keyboard (see Keyboard on page 72).

d.Top cover (see Top cover on page 76).

e.Fan and heat sink assembly (see Fan and heat sink assembly on page 89).

f.Audio/USB 3.0 board (see Audio/USB 3.0 board on page 95).

g.Speakers (see Speakers on page 99).

h.ExpressCard/USB 2.0 assembly (see ExpressCard/USB 2.0 assembly on page 102).

When replacing the system board, be sure that the following components are removed from the defective system board and installed on the replacement system board:

●Memory modules (see Memory Modules (under service door) on page 53)

●WLAN module (see WLAN module on page 56)

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Chapter 4 Removal and replacement procedures