3. Disconnect the modem module cable (3) from the system board.

Reverse this procedure to install the modem module.

System board and system board frame

NOTE: All system board spare part kits include replacement thermal material. The Thermal Material Kit is also available using spare part numbers 413706-001 (for use in all countries or regions except Japan and Asia countries and regions) and 445853-001 (for use only in Japan and Asia Pacific countries and regions).

Description

Spare part number

 

 

For use with computer models equipped with WLAN and WWAN capability

452219-001

 

 

For use with computer models equipped with only WLAN capability

452218-001

 

 

System board frame

455428-001

 

 

Before removing the system board, 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 46).

5. Remove the following components:

a. Hard drive (see Hard drive on page 50)

b. Optical drive (see Optical drive on page 54)

c. Keyboard (see Keyboard on page 58)

d. Fan (see Fan on page 62)

86 Chapter 4 Removal and replacement procedures