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Before removing the system board, follow these steps:
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 unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4. Remove the service cover (see
Service cover on page 37).
5. Remove the battery (see
Battery on page 39).
6. Remove the hard drive (see
Hard drive on page 42).
7. Remove the card reader board (see
Card reader board on page 54).
8. Remove the fan (see
Fan on page 55).
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 (see
RTC battery on page 48)
●
Solid-state drive (see
Solid-state drive on page 40)
●
Heat sink (see
Heat sink on page 62)
●
Memory module see (
Memory modules on page 47).
●
WLAN module see (
WLAN module on page 44).
●
WWAN module see (
WWAN module on page 45).
Remove the system board:
1. Remove the following cables:
●
Right speaker cable (1)
●
Power button board cable (2)
●
Display panel cable (3)
●
Keyboard cable (4)
●
TouchPad cable (5)
●
Keyboard backlight cable (6)
●
NFC cable (7)
●
Fan cable (8)
●
USB/audio board cable (9)
●
USB/audio board cable (10)
Component replacement procedures
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