Toshiba Tecra M4 Maintenance Manual page 105

2 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 flexible cable is firmly connected to connector on the Bluetooth
module and CN4400 on the CN 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,
perform Check 3.
Check 3 Make sure the cable is firmly connected to CN9520 on the CN board and CN9502
on the System board. If the flexible cable is disconnected, connect it firmly and
perform Procedure 1. If the Bluetooth function is still not functioning properly, go
to procedure 3.
2-48 [CONFIDENTIAL] TECRA M4 Maintenance Manual (960-521)
2.12 Bluetooth Troubleshooting