Before removing the system board, 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 50), and then remove the following components:
a. Service cover (see
Service cover on page 51)
b. Hard drive (see
Hard drive on page 52)
c. Optical drive (see
Optical drive on page 54)
d. Keyboard (see
Keyboard on page 62)
e. Top cover (see
Top cover on page 71)
f. ExpressCard assembly (see
ExpressCard assembly on page 81)
g. Audio/USB board (see
Audio/USB board on page 85)
h. Speakers (see
Speakers on page 89)
i. Fan/heat sink assembly (see
Fan/heat sink assembly on page 90)
j. Display assembly (see
Display assembly on page 96)
NOTE: 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:
●
WWAN module (see
WWAN module on page 56)
●
Solid-state drive (see
Solid-state drive on page 58)
●
WLAN module (see
WLAN module on page 59)
●
Expansion memory (see
Primary memory module on page 61)
●
Primary memory (see
Expansion memory module on page 67)
●
smart card reader (see
Smart card reader on page 83)
●
Processor (see
Processor on page 93)
●
Graphics board (see
Graphics board on page 94)
Remove the system board:
1. Make sure that the RTC battery cable is disconnected from the system board (see
RTC battery
on page 69).
104 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
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