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2 Troubleshooting Procedures
2.10 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 continue 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
Execute the LAN test program available as part of the LAN/Modem/Bluetooth/IEEE1394
test program. Refer to Chapter 3,
Tests and Diagnostics
for more information on how to
perform the test program.
If any error is detected by the test, go to Procedure 2.
Procedure 2
Connector Check and Replacement Check
The RJ-45 jack with LAN cable is connected to the system board. If the LAN malfunctions,
the system board might be damaged.
Disassemble the computer following the steps described in Chapter 4, Replacement
Procedures and perform the following check:
Check 1 Make sure the RJ-45 jack is firmly connected to CN4100 on the system board.
If the connectors are disconnected, connect it firmly and repeat Procedure 1. If
the LAN function is still not functioning properly, perform Check 2.
Check 2
The system board may be defective or damaged. Replace it with a new one
following the steps in Chapter 4,
Replacement Procedures
.
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[CONFIDENTIAL]
PORTEGE R300 Maintenance Manual (960-591)
Summary of Contents for PORTEGE R300
Page 10: ...x CONFIDENTIAL PORTÉGÉ R300 Maintenance Manual 960 591 ...
Page 11: ... CONFIDENTIAL Chapter 1 Hardware Overview ...
Page 12: ...1 ii CONFIDENTIAL PORTEGE R300 Maintenance Manual 960 591 ...
Page 38: ...1 Hardware Overview 1 24 CONFIDENTIAL PORTÉGÉ R300 Maintenance Manual 960 591 ...
Page 39: ... CONFIDENTIAL Chapter 2 Troubleshooting Procedures ...
Page 40: ...2 Troubleshooting Procedures 2 ii CONFIDENTIAL PORTÉGÉ R300 Maintenance Manual 960 591 ...
Page 115: ... CONFIDENTIAL Chapter 3 Tests and Diagnostics ...
Page 116: ...3 Tests and Diagnostics 3 ii CONFIDENTIAL PORTEGE R300 Maintenance Manual 960 591 3 ...
Page 120: ...3 Tests and Diagnostics 3 vi CONFIDENTIAL PORTEGE R300 Maintenance Manual 960 591 ...
Page 227: ...Chapter 4 Replacement Procedures CONFIDENTIAL ...
Page 228: ...4 Replacement Procedures 4 ii CONFIDENTIAL PORTÉGÉ R300 Maintenance Manual 960 591 ...
Page 232: ...4 Replacement Procedures 4 vi CONFIDENTIAL PORTÉGÉ R300 Maintenance Manual 960 591 ...
Page 281: ... CONFIDENTIAL Appendices ...
Page 282: ...Appendices App ii CONFIDENTIAL PORTEGE R300 Maintenance Manual 960 591 ...
Page 290: ...Appendices App x CONFIDENTIAL PORTEGE R300 Maintenance Manual 960 591 ...
Page 342: ...Appendices Appendix E Key Layout E 2 CONFIDENTIAL PORTEGE R300 Maintenance Manual 960 591 ...
Page 352: ...Appendices Appendix I Reliability I 2 CONFIDENTIAL PORTEGE R300 Maintenance Manual 960 591 ...