System board
NOTE: All system board spare part kits include replacement thermal material.
Description Spare part number
System board for use in models without Windows 8:
Discrete graphics 683855-001
UMA graphics 683856-001
UMA graphics in Japan 696335-001
System board for use in Windows 8 models:
Discrete graphics and Windows 8 Standard 683855-501
Discrete graphics and Windows 8 Professional 683855-601
UMA graphics and Windows 8 Standard 683856-501
UMA graphics and Windows 8 Professional 683856-601
Discrete graphics and Windows 8 Standard in Japan 696335-501
UMA graphics and Windows 8 Professional in Japan 696335-601
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 40).
5. Remove the following components:
a. Bottom door (see
Bottom door on page 42).
b. Hard drive (see
Hard drive on page 46)
c. Optical drive (see
Optical drive on page 44)
d. Keyboard (see
Keyboard on page 54)
e. Top cover (see
Top cover on page 56)
When replacing the system board, be sure to remove the following components from the defective
system board and install on the replacement system board:
●
SIM card (see
SIM on page 43)
●
Memory module (see
Memory modules on page 48)
Component replacement procedures 71
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