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4.
Release the ZIF connector to which the Smart Card reader board cable is connected, and then
disconnect the Smart Card reader board cable (2) from the system board.
5.
Remove the system board.
Reverse this procedure to install the system board.
Heat sink
Description Spare part number
Heat sink (includes replacement thermal material) 693307-001
Before removing the heat sink, follow these steps:
1. Turn off 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 the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the battery (see
Battery on page 45), and then remove the following components:
a. Service cover (see
Service cover on page 47)
b.
Hard drive (see
Hard drive on page 48)
c. WLAN module (see
WLAN module on page 51)
d. WWAN module (see
WWAN module on page 53)
e. Fan (see
Fan on page 57)
f. Keyboard (see
Keyboard on page 58)
Component replacement procedures
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