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2 Troubleshooting Procedures 2.13 LAN Troubleshooting
2-44 PORTEGE A200 Maintenance Manual (960-499)
2.13 LAN Troubleshooting
To check if the computer’s LAN is defective or malfunctioning, follow the troubleshooting
procedures below as instructed.
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 LAN function is installed on the system board. The LAN jack is connected to the system
board. If the LAN malfunctions, the system board might be faulty.
Replace the system board with a new one following the steps described in Chapter 4.