System board
NOTE: The system board spare part kit includes replacement thermal material.
Description Spare part number
Intel Pentium N3520 processor and the Windows 8.1 Standard operating system 755724-501
Intel Pentium N3520 processor and a non-Windows 8 operating system 755724-001
Intel Celeron N2820 processor and the Windows 8.1 Standard operating system 755723-501
Intel Celeron N2820 processor and a non-Windows 8 operating system 755723-001
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 bottom cover (see
Bottom cover on page 28).
5. Remove the battery (see
Battery on page 49).
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 32)
●
WWAN module (see
WWAN module on page 34)
●
Memory module (see
Memory module on page 41)
●
Heat sink (see
Heat sink on page 46)
●
Fan (see
Fan on page 45)
Remove the system board:
1. Disconnect the following cables from the system board:
(1): Power connector cable
(2): Wireless antennas (may include one or two antennas)
(3): Keyboard cable
(4): Webcam cable
(5): Display cable
(6): Power button board cable
(7): Fan cable
(8): Speaker cable
(9): Touchpad board cable
(10): Hard drive cable
60 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts
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