h. Audio board (see Audio board on page 71)
i. USB/power connector board (see USB/power connector board on page 67)
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 43)
●RTC battery (see RTC battery on page 45)
●WLAN module (see WLAN module on page 46)
●Bluetooth module (see Bluetooth module on page 65)
●ExpressCard assembly (see ExpressCard assembly on page 72)
●Fan/heat sink assembly (see Fan/heat sink assembly on page 74)
●Processor (see Processor on page 77)
Remove the system board:
1. Press the ExpressCard slot bezel (1) to eject the bezel from the slot.
2. Remove the ExpressCard slot bezel (2) from the slot.
3. Remove the Phillips PM2.5×5.0 screw (3) that secures the system board to the base enclosure.
4. Use the optical drive connector (1) to lift the right side of the system board (2) until it rests at an angle.
5. Disconnect the audio board cable (3) from the system board.
Component replacement procedures 69
