Before removing the system board, follow these steps:
1.Shut down the computer.
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 42).
5.Remove the keyboard (see Keyboard on page 47).
6.Remove the top cover (see Top cover on page 51).
7.Remove the hard drive (see Hard drive on page 56).
8.Remove the USB board (see USB board/Audio jack on page 59).
9.Remove the WLAN (see WLAN module on page 60).
After removing the system board, be sure that the following components are removed from the defective system board and installed on the replacement system board:
●Memory module (see Memory module on page 69)
●RTC battery (see RTC battery on page 72)
●Heat sink (see Heat sink on page 77)
●PCH heat sink (see PCH heat sink on page 76)
●mSATA
66 | Chapter 4 Removal and replacement procedures |
