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2.12 Bluetooth Troubleshooting 2 Troubleshooting
TECRA M4 Maintenance Manual (960-521) [CONFIDENTIAL] 2-49
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 Any of the 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 CN board may be defective or damaged. Replace the CN board 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 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 5.
Check 5 The System board may be defective or damaged. Replace the System board with a
new one following the steps in Chapter 4, Replacement Procedures.