Toshiba Satellite A300 Maintenance Manual - Page 119
Procedure 2, Antennas' Connection Check
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Troubleshooting Procedures Procedure 2 Antennas' Connection Check The wireless LAN 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 the wireless communication switch is "On". If the switch is "Off", turn it "On". If the problem still occurs, perform Check 2. Check 2 Check 3 Make sure wireless LAN card (Mini-PCI) is firmly connected to the CN2200 on system board. If the connector is defective, connect it firmly and perform Procedure 1. If the problem still occurs, perform Check 3. Make sure that wireless LAN antenna cables (black and white) are firmly connected to the connectors on Wireless LAN card. If wireless LAN antenna cables are not connected properly, connect them firmly and perform Procedure 1. If the problem still occurs, go to the procedure 3. Satellite A300 Maintenance Manual (960-Q08) 43