Toshiba A10 manual Procedure Antenna Check

2 Troubleshooting Procedures 2.14 Wireless LAN Troubleshooting

Procedure 3 Antenna Check

Check 1 Use an antenna test cable to check the antennas' connection. Follow the steps below:

1.Remove the Mini PCI slot cover and lift it off. Refer to Chapter 4, Replacement Procedures, for detailed steps of disassembling.

2.Disconnect the wireless LAN antenna cables (white and black) from the Mini PCI card.

3.Connect the end of the antenna test cable to the multimeter.

4.Connect the Main antenna cable to the antenna test cable. One clip is connected to the end of the antenna cable. The other is connected to the opposite side of the antenna cable.

5.Determine the resistance. The cable passes the test when the resistance is less than 5Ω. If it is more than 5Ω, the antenna cable fails the test.

6.Change the antenna cable. Perform from step 3 to check the black antenna cable.

Figure 2-4 Antenna Test cable

NOTE: 1. The resistances determined with the steps above may not be stable with other machines because of "cable loss," which varies according to the length of the cable. The impedance of the antenna itself is about 0.5-0.8Ω.

2.The above steps cannot accurately determine the impedance of the antenna. Use a LC meter for a precise measure of impedance.

If the wireless LAN antenna cables pass the test, connect them to the Mini PCI card and cover the Mini PCI slot, then perform Procedure 1.

If the wireless LAN antenna cables do not pass the test, replace the wireless LAN antenna cables with new ones following the steps in Chapter 4, Replacement Procedures. If the wireless LAN is still not functioning properly, go to Procedure 4.

2-58 Satellite A10/TECRA A1/Satellite Pro A10 Maintenance Manual (960-445)