Toshiba Satellite A40 Maintenance Manual page 113

2 Troubleshooting Procedures
Procedure 2 Antennas' Connection Check
The wireless LAN 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 wireless communication switch is "On".
If the switch is "Off", turn it "On". If the wireless LAN is still not functioning
properly, perform Check 2.
Check 2 Make sure the wireless LAN board is firmly connected to PJ2200 on the system
board.
If the connector is disconnected, connect it firmly and perform Procedure 1. If the
wireless LAN board is still not functioning properly, perform Check 3.
Check 3 Make sure the wireless LAN antenna cables (black and white) are firmly
connected to the wireless LAN board.
If the wireless LAN antenna cables are disconnected, connect them firmly and
perform Procedure 1. If the wireless LAN function is still not functioning
properly, perform Check 3.
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2.12 Wireless LAN Troubleshooting
Satellite A40 Maintenance Manual (960-458)