2 Troubleshooting Procedures 2.14 Bluetooth Troubleshooting
Procedure 2 Antennas' Connection Check
The Bluetooth function-wiring diagram is shown below:
Any of the connections may be defective. 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 that Bluetooth module is firmly connected to the CN4400 on system
board. If the connector is defective, connect it firmly and perform Procedure 1. If
the problem still occurs, perform Check 3.
Check 3 Make sure that Bluetooth antenna cables is firmly connected to the connectors on
Bluetooth module. If Bluetooth antenna cable is not connected properly, connect
them firmly and perform Procedure 1. If the problem still occurs, go to the
procedure 3.
PORTEGE M300 Maintenance Manual (960-504) 2-53