Before removing the system board, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is o 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 rst 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 24).
5. Remove the optical drive (see Optical drive on page 25).
6. Remove the bottom cover (see Bottom cover on page 28).
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:
●
Memory modules (see Memory module on page 36)
●
WLAN module (see WLAN module on page 33)
●
Heat sink (see Heat sink on page 43)
●
Fan (see Fan on page 37)
Remove the system board:
1. Position the computer upright, and then disconnect the following cables from the system board:
(1) ClickPad cable
(2) TouchPad cable
(3) Hard drive cable
(4) Optical drive cable
(5) Keyboard cable
(6) Power connector cable
(7) Display cable
(8) Speaker cable
(9) Power button board
HP
Condential
Component replacement procedures 41
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