2.14
Wireless LAN Troubleshooting
2 Troubleshooting
Procedure 3 Antenna Check
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. Disconnect the wireless LAN antenna (white and black) from the wireless LAN
board.
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
Ω
. If it is more than 5
Ω
, the antenna is faulty.
4. Measure the black antenna’s resistance. Check if there is faulty.
Figure 2-4 Antenna Test jig
Measurement Value Pass/fail Comment
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.
NOTE
: 1. The resistances determined with the steps above may not be stable according
to the length of the antenna. The impedance of the antenna itself is about 0.5-
0.8
Ω
.
2. The above steps cannot accurately determine the impedance of the antenna.
Use an LC meter for a precise measure of impedance.
If each wireless antenna pass 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.
PORTEGE R100 Maintenance Manual (960-440)
2-49
Содержание Portege R100
Страница 1: ...1 Toshiba Personal Computer PORTEGE R100 Maintenance Manual TOSHIBA CORPORATION File Number 960 440 ...
Страница 9: ...Chapter 1 Hardware Overview ...
Страница 10: ...1 Hardware Overview 1 Hardware Overview 1 ii PORTEGE R100 Maintenance Manual 960 440 ...
Страница 31: ...Chapter 2 Troubleshooting Procedures ...
Страница 32: ...2 Troubleshooting Procedures 2 2 ii PORTEGE R100 Maintenance Manual 960 440 ...
Страница 36: ...2 Troubleshooting Procedures 2 vi PORTEGE R100 Maintenance Manual 960 440 ...
Страница 87: ...Chapter 3 Tests and Diagnostics ...
Страница 88: ...3 Tests and Diagnostics 3 3 ii PORTREGE R 100 Maintenance Manual 960 440 ...
Страница 163: ...3 24 SETUP 3 Tests and Diagnostics PORTEGE R100 Maintenance Manual 960 440 3 73 ...
Страница 164: ...Chapter 4 Replacement Procedures ...
Страница 165: ...4 Replacement Procedures 4 4 ii PORTEGE R100 Maintenance Manual 960 440 ...
Страница 229: ...Appendices ...
Страница 230: ...Appendices App ii PORTEGE R100 Maintenance Manual 960 440 ...
Страница 236: ...Appendices App viii PORTEGE R100 Maintenance Manual 960 440 ...
Страница 242: ...Appendices Apx A Handling the LCD Module A 6 PORTEGE R100 Maintenance Manual 960 440 ...
Страница 274: ...Appendices 1 Pin Assignment 1 26 Portégé R100 Maintenance Manual 960 440 ...
Страница 286: ...Appendices Apx E Key Layout E 2 PORTEGE R100 Maintenance Manual 960 440 ...
Страница 288: ...Appendices Apx F BIOS KBC EC Update F 2 PORTEGE R100 Maintenance Manual 960 440 ...
Страница 290: ...Appendices Apx G Reliability G 2 PORTEGE R100 Maintenance Manual 960 440 ...
Страница 292: ...Appendices Apx H Key FD H 2 PORTEGE R100 Maintenance Manual 960 440 ...