System board
NOTE: The system board spare kit includes replacement thermal material.
Description Spare part number
ATI Mobility Radeon HD 5650 graphics, 1-GB dedicated memory, and a quad-core processor 592816–001
ATI Mobility Radeon HD 5650 graphics, 1-GB dedicated memory, and a dual-core processor 603642–001
ATI Mobility Radeon HD 5470 graphics, 512-MB dedicated memory, and a dual-core processor 603643–001
Intel HM55 UMA graphics and shared memory 603644–001
Before removing the system board:
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 disconnecting the power cord from the AC outlet
and then disconnecting the AC adapter from the computer.
4. Remove the following components:
a.
Battery on page 43
b.
Hard drive cover on page 44
c.
Hard drive on page 45
d.
Optical drive on page 52
e.
Keyboard on page 53
f.
Top cover on page 55
g.
Touchscreen display assembly on page 60 or BrightView display assembly on page 65
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:
●
RTC battery on page 51
●
Memory module on page 49
●
WLAN module on page 47
●
Fan/heat sink assembly on page 82
●
Processor on page 85
ENWW
Component replacement procedures
79
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