2.11 LAN Troubleshooting
2 Troubleshooting Procedures
2.11 LAN Troubleshooting
This section describes how to determine if the computer's LAN is functioning properly.
Perform the steps below starting with Procedure 1 and continuing with the other procedures
as required.
Procedure 1: Diagnostic Test Program Execution Check
Procedure 2: Connector Check and Replacement Check
Procedure 1
Diagnostic Test Program Execution Check
The LAN/Modem/Bluetooth/IEEE1394 test program is stored in the Diagnostics Disk.
For the test, prepare a test LAN/Modem/Bluetooth/IEEE1394.
Then insert the Diagnostics Disk in the computer’s floppy disk drive, turn on the computer
and run the test. Refer to Chapter 3,
Tests and Diagnostics,
for more information about the
diagnostics test procedures.
If any errors occur while executing the test, go to Procedure 2.
Procedure 2
Connector Check and Replacement Check
A RJ45 jack with LAN cable is connected to the connector CN4100 on the System Board. If
the LAN malfunctions, the connections may loose or the LAN cable, LAN harness or,
System Board might be damaged.
Disassemble the computer following the steps described in Chapter 4
, Replacement
Procedures.
Check 1
Make sure the following connections are secure. If any connection is loose, secure
the connection. If the LAN is still not functioning properly, perform Check 2
libretto U100 Maintenance Manual (960-520)
[CONFIDENTIAL]
2-49
Summary of Contents for libretto U100 Series
Page 10: ...x CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Page 11: ... CONFIDENTIAL Chapter 1 Hardware Overview ...
Page 12: ...1 Hardware Overview 1 ii CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Page 38: ...1 Hardware Overview 1 9 AC Adapter 1 24 CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Page 39: ... CONFIDENTIAL Chapter 2 Troubleshooting Procedures ...
Page 40: ...2 Troubleshooting Procedures 2 ii CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Page 44: ...2 Troubleshooting Procedures 2 vi CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Page 113: ... CONFIDENTIAL Chapter 3 Tests and Diagnostics ...
Page 114: ...3 Tests and Diagnostics 3 ii CONFIDENTIAL libretto U100 Maintenance Manual 960 520 3 ...
Page 221: ...Chapter 4 Replacement Procedures CONFIDENTIAL ...
Page 222: ...4 Replacement Procedures 4 ii CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Page 226: ...4 Replacement Procedures 4 vi CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Page 295: ... CONFIDENTIAL Appendices ...
Page 296: ...Appendices App ii CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Page 304: ...Appendices App x CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Page 324: ...Appendices Appendix B Board Layout B 14 CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Page 366: ...Appendices Appendix E Key Layout E 2 CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Page 374: ...Appendices Appendix I Reliability I 2 CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...