Apple M8760LL Service Guide - Page 139
Bluetooth, Bluetooth system preferences does not show up under Hardware system preferences,
UPC - 718908426234
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6. Turn off the computer. Perform the keyboard PMU reset procedure described in the Hardware Troubleshooting Tools and Tips section. Wait five seconds before continuing. Press the power button to start the computer. Warning: Resetting the power manager will permanently remove a RAM disk, if present, and all of its contents. You will also need to reset the date and time (using the Date & Time system preference pane). 7. Make sure the Sound/DC-in cable is firmly connected. Look for damaged insulation or wires. 8. Replace Sound/DC-in power cable. 9. Replace Sound/DC-in board. 10. Replace logic board. Bluetooth Bluetooth system preferences does not show up under Hardware system preferences 1. Check the wire connectors to Sound/DC-in board and the Bluetooth card. Make sure the cable is not damaged and fully inserted. 2. Replace Bluetooth card. 3. Replace the logic board. Bluetooth Card not recognized by other devices 1. Open Bluetooth in system preferences and make sure under the Settings tab that Discoverable is checked. 2. Check the Bluetooth antenna is connected to Bluetooth card. 3. Replace with known-good Bluetooth card. 4. Replace display panel assembly. 5. Replace logic board. Hardware Symptom Charts PowerBook G4 (15-inch FW800) Troubleshooting - 21