Toshiba Tecra A2-S239 Maintenance Manual - Page 103

2.14 Wireless LAN Troubleshooting 2 Troubleshooting Procedures Procedure 2 Antennas' Connection Check The wireless LAN function-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 Check 2 Make sure the wireless communication switch is "On". If the switch is "Off", turn it "On". If there is still an error, perform Check 2. Make sure the Mini PCI card is firmly connected to the PJ2500 on the system board. If the connector is disconnected, connect it firmly and perform Procedure 1. If the Wireless LAN 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 Mini PCI card. If the wireless LAN antenna cables are disconnected, connect them firmly and perform Procedure 1. If the wireless LAN is still not functioning properly, go to Procedure 3. Procedure 3 Replacement Check The Mini PCI card and the system board are connected. Any of these components may be damaged. Refer to Chapter 4, Replacement Procedures, for instructions on how to disassemble the computer and the n perform the following checks: Check 1 Check2 The Mini PCI card may be defective or damaged. Replace the Mini PCI card with a new one following the instructions in Chapter 4, Replacement Procedures. If the problem still exists, perform Check 2. Replace the system board with a new one following the instructions in Chapter 4, Replacement Procedures and test the display again. Satellite A50/TECRA A2 Maintenance Manual (960-478) 2-49