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2 Troubleshooting 2.12 Bluetooth Troubleshooting
Procedure 2 Connection Check
The Bluetooth functional 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 the Bluetooth cable is firmly connected to connector on the Bluetooth
module CN4400 on the System board. If the connector is disconnected, connect it
firmly and perform Procedure 1. If the Bluetooth module is still not functioning
properly, perform Check 2.
Check 2 Make sure the Bluetooth antenna cable (brown) is firmly connected to the
Bluetooth module. If the Bluetooth antenna cable is disconnected, connect it firmly
and perform Procedure 1. If the Bluetooth function is still not functioning properly,
Procedure 3 Replacement Check
The Bluetooth antenna, Bluetooth module, CN 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 cables may be defective or damaged. Replace the cable 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 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 3.
Check 3 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 4.
Check 4 The System board may be defective or damaged. Replace the System board with a
new one following the steps in Chapter 4, Replacement Procedures.
2-48 [CONFIDENTIAL] Satellite R20/TECRA M7 Maintenance Manual (960-572)