2.15 Wireless LAN Troubleshooting
2 Troubleshooting Procedures
PORTEGE A100 Maintenance Manual (960-460)
2-49
Procedure 3
Antenna Capability 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.
Disassemble the computer and disconnect the wireless LAN antennas (white
and black) from the wireless LAN board. 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
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 2-3 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 st able according to
the length of the antenna. The impedance of the antenna itself is about 0.5 to 0.8
ohm.
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 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.
Summary of Contents for A100 VA3 - Satellite - Pentium Dual Core 1.6 GHz
Page 10: ...Chapter 1 Hardware Overview ...
Page 11: ...1 Hardware Overview 1 ii PORTEGE A100 Maintenance Manual 960 460 1 Hardware Overview ...
Page 36: ...Chapter 2 Troubleshooting Procedures ...
Page 37: ...2 Troubleshooting Procedures 2 ii PORTEGE A100 Maintenance Manual 960 460 2 ...
Page 41: ...2 Troubleshooting Procedures 2 vi PORTEGE A100 Maintenance Manual 960 460 ...
Page 96: ...Chapter 3 Tests and Diagnostics ...
Page 97: ...3 Tests and Diagnostics 3 ii PORTEGE A100 Maintenance Manual 960 460 3 ...
Page 112: ...3 4 System Test 3 Tests and Diagnostics PORTEGE A100 Maintenance Manual 960 460 3 13 ...
Page 182: ...Chapter 4 Replacement Procedures ...
Page 183: ...4 Replacement Procedures 4 ii PORTEGE A100 Maintenance Manual 960 460 4 ...
Page 249: ...4 Replacement Procedures 4 25 Fluorescent lamp 4 62 PORTEGE A100 Maintenance Manual 960 460 ...
Page 265: ...Appendices ...
Page 266: ...Appendices App ii PORTEGE A100 Maintenance Manual 960 460 ...
Page 272: ...Appendices App viii PORTEGE A100 Maintenance Manual 960 460 ...
Page 278: ...Appendices Apx A Handling the LCD Module A 6 PORTEGE A100 Maintenance Manual 960 460 ...
Page 316: ...Appendices Apx E Key Layout E 2 PORTEGE A100 Maintenance Manual 960 460 ...
Page 318: ...Appendices Apx F BIOS KBC EC Update F 2 PORTEGE A100 Maintenance Manual 960 460 ...
Page 320: ...Appendices Apx G Reliability G 2 PORTEGE A100 Maintenance Manual 960 460 ...
Page 322: ...Appendices Apx H Key FD H 2 PORTEGE A100 Maintenance Manual 960 460 ...