Toshiba Tecra A8 Maintenance Manual - Page 112

2 Troubleshooting Procedures 2.12 Bluetooth Troubleshooting Procedure 2 Connection Check The Bluetooth function wiring diagram is shown below: Any of the connections may be disconnected. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures, and perform the following checks: Check 1 Make sure that the wireless communication switch is "On". If the switch is "Off", turn it "On". If the problem still occurs, perform Check 2. Check 2 Make sure the Bluetooth module is firmly connected to the connector CN4400 on the system board. If the connector is disconnected, connect it firmly and go to Procedure 1. If the Bluetooth module is still not functioning properly, perform Check 3. Check 3 Make sure the Bluetooth antenna cable is firmly connected to the Bluetooth module. If the Bluetooth antenna cable is disconnected, connect it firmly and go to Procedure 1. If the Bluetooth module is still not functioning properly, go to Procedure 3. Procedure 3 Replacement Check The Bluetooth antenna, Bluetooth module, sound board and system board are connected to the circuits. Any of these components may be damaged. Refer to Chapter 4, Replacement Procedures, for instructions on how to disassemble the computer and then perform the following checks: Check 1 The Bluetooth module may be defective or damaged. Replace the Bluetooth module with a new one following the steps in Chapter 4, Replacement Procedures. If the Bluetooth is still not functioning properly, perform Check 2. Check 2 The Bluetooth antenna may be defective or damaged. Replace the Bluetooth antenna with a new one following the steps in Chapter 4, Replacement Procedures. If the Bluetooth is still not functioning properly, perform Check 3. Check 3 The system board may be defective or damaged. Replace the system board with a new one following the steps in Chapter 4, Replacement Procedures. 2-64 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)