System board
NOTE: All system board kits include replacement thermal material.
Description Spare part number
System board for use in models with 1 GB of discrete graphics memory 616244-001
System board for use in models with 512 MB of discrete graphics memory 608203-001
System board for use in models with UMA graphics 608204-001
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:
●
SIM (see
SIM on page 42)
●
RTC battery (see
RTC battery on page 45)
●
Memory modules (see
Memory module on page 43)
●
WLAN module (see
WLAN module on page 46)
●
WWAN module (see
WWAN module on page 51)
●
Fan/heat sink assembly (see
Fan/heat sink assembly on page 80)
●
Processor (see
Processor on page 85)
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 41).
5. Remove the following components:
a. Hard drive (see
Hard drive on page 53)
b. WLAN module (see
WLAN module on page 46)
c. WWAN module (see
WWAN module on page 51)
d. Optical drive (see
Optical drive on page 55)
e. Keyboard (see
Keyboard on page 57)
f. Top cover (see
Top cover on page 59)
g. Speaker assembly (see
Speaker assembly on page 76)
78 Chapter 4 Removal and replacement procedures
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