Specifications

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 30).
5.
Remove the keyboard (see
Keyboard on page 31).
6. Remove the top cover (see
Top cover on page 35).
7. Remove the hard drive (see
Hard drive on page 39).
8. Remove the USB board (see
USB board on page 41).
9. Remove the WLAN (see
WLAN module on page 42).
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 49)
●
RTC battery (see
RTC battery on page 51)
●
Heat sink (see
Heat sink on page 54)
●
PCH heat sink (see
PCH heat sink on page 52)
Remove the system board:
46 Chapter 4 Removal and replacement procedures