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4–36 Maintenance and Service Guide
Removal and replacement procedures
Remove the system board:
1. Disconnect the USB board cable 1 from its mounting clip in the base enclosure.
2. Disconnect the Bluetooth cable 2 from the system board.
3. Disconnect the modem module cable 3 from the system board.
4. Disconnect the audio cable 4 from the system board.
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CAUTION: Do not attempt to disconnect the optical drive connector before removing the system board. Otherwise, you will
damage the locator pin on the optical drive connector.
5. Remove the three Phillips PM2.5x9.0 screws 1 that secure the system board.
6. Remove the two Phillips PM2.0x5.0 screws 2 that secure the optical drive connector.