Toshiba satellite a20 series Benutzerhandbuch

 

Use an antenna test cable to check the antennas' connection. Follow the steps below. 
 
Any of the connections may be disconnected. Disassemble the computer following the steps 
described in Chapter 4, perform the following checks. 
 

1.  Disassemble the computer and disconnect the wireless LAN antenna cables (white 

and black) from the wireless LAN card. Refer to Chapter 4, Replacement 
Procedures, for detailed steps of disassembling 

2.  Connect the tester set up for impedance measurement to the antenna jig. Measure 

the white antenna’s resistance. 

3.  Determine the resistance. The antenna passes the test when the resistance is less 

than 5 ohm. If it is more than 5 ohm, the antenna is faulty. 

4.  Measure the black antenna’s resistance. Check if there is a faulty. 
 

 

Less than 5

Ω 

Pass Include 

cable 

loss 

More than 5

Ω 

Fail 

The digital tester shows 0L ,etc. if there is a broken wire. 

 

to the length of the antenna. The impedance of the antenna itself is about 0.5 
to 0.8 ohm. 

Use an LC meter for a precise measure of impedance. 

 
If each wireless antenna passes the above test, return the Wireless LAN module back, then 
perform Procedure 1. 
If the wireless LAN has still an error, go to Procedure 4.