Important notices for handling the system board:

When handling the system board, bear the following in mind.

• The system board has an accelerometer, which can be broken by applying several thousands of G-forces.

  Note: Dropping a system board from a height of as little as 6 inches so that it falls flat on a hard bench can subject the accelerometer to as much as 6,000 G's of shock.

• Be careful not to drop the system board on a bench top that has a hard surface, such as metal, wood, or composite.
• Avoid rough handling of any kind.
• At every point in the process, be sure not to drop or stack the system board.
• If you put a system board down, be sure to put it only on a padded surface such as an ESD mat or conductive corrugated material.

Note: The fan assembly and the backup battery are attached to the system board.

For access, remove these FRUs in order:

• Battery pack
• Bottom door
• Hard disk drive (HDD)
• Keyboard
• Palm rest assembly, power-on board assembly (with cable), and microphone
• Bluetooth daughter card (BDC-2)

Following components soldered on the top side of the system board are extremely sensitive. When you service the system board, avoid any kind of rough handling.

For Intel models:

[a] Accelerometer chip for the HDD Active Protection System™
[b] CPU
[c] PCH (Platform Controller Hub)



For AMD models:

[a] Accelerometer chip for the HDD Active Protection System™
[b] North Bridge
[c] CPU
[d] South Bridge

When installing: Make sure that the connectors are attached firmly.



When installing: Make sure that the connector is attached firmly.

DANGER Use only the battery specified in the parts list for your computer. Any other battery could ignite or explode.

When installing: Make sure that the connectors are attached firmly.

When installing: Before you attach the fan assembly to the system board, you need to peel the thin film off from the thermal rubbers as shown in this figure.

For AMD models:


For Intel models:

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