3. Disconnect all external devices from the computer.
4. Remove the battery (see
Battery on page 44), and then remove the following components:
a. Service cover (see
Service cover on page 45)
b. Hard drive (see
Hard drive on page 46)
c. Optical drive (see
Optical drive on page 48)
d. Keyboard (see
Keyboard on page 57)
e. Top cover (see
Top cover on page 65)
f. ExpressCard assembly (see
ExpressCard assembly on page 74)
g. Audio/USB board (see
Audio/USB board on page 77)
h. Speakers (see
Speakers on page 80)
i. Fan/heat sink assembly (see
Fan/heat sink assembly on page 81)
j. Display assembly (see
Display assembly on page 87)
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 50)
●
Solid-state drive (see
Solid-state drive (M.2) on page 52)
●
WLAN module (see
WLAN module on page 53)
●
Expansion memory (see
Primary memory module on page 55)
●
Primary memory (see
Expansion memory module on page 61)
●
smart card reader (see
Smart card reader on page 76)
●
Processor (see
Processor on page 84)
●
Graphics board (see
Graphics board on page 85)
Remove the system board:
1. Make sure that the RTC battery cable is disconnected from the system board (see
RTC battery
on page 63).
Component replacement procedures 95
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