Toshiba L600D Benutzerhandbuch

To check if the computer’s LAN is malfunctioning or not, follow the troubleshooting 
procedures below as instructed. 

Procedure 1:   Diagnostic Test Program Execution Check 

Procedure 2:   Connector Check and Replacement Check 

Execute LAN test in the LAN 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. 

The LAN function is embedded on system board. If LAN malfunctions, its connection is 
defective or LAN cable and system board may be faulty. 

Check 1 

Make sure LAN cable is firmly connected to the connector CN12. If the problem 
still occurs, perform Check 2. 

 

No Separated LAN BOARD ，it’s assembled. 

Check 2 

LAN cable may be faulty. Replace it with a new one. If the problem still occurs, 
perform Check 3. 

Check 3 

System board may be faulty. Replace it with a new one following the instruction in 
Chapter 4.