4. Remove the TouchPad button board from the computer.
Reverse this procedure to install the TouchPad button board.
System board
NOTE: The system board spare part kit includes replacement thermal material.
Description Spare part number
System board equipped with an A4-PRO 3340B 2.20-GHz processor (quad core, 25 W, 2-MB L2 cache)
and the Windows 8 Professional operating system (includes replacement thermal material):
802492-601
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 23).
5. Remove the memory cover (see
Memory cover on page 24).
6. Remove the bottom cover (see
Base enclosure on page 26).
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:
●
WLAN module (see
WLAN module on page 28)
●
Memory modules (see
Memory module on page 25)
●
RTC battery (see
RTC battery on page 32)
●
Heat sink (see
Heat sink on page 35)
Component replacement procedures 37
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