Toshiba PRO L645 Manual Do Utilizador

Procedure 1:   Diagnostic Test Program Execution Check 

Execute LA

 for 

more information on how to perform the test program. 

If any error

The LAN f
defective o

aulty. 

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

Procedure 2:   Connector Check and Replacement Check 

N test in the LAN test program. Refer to Chapter 3, Tests and Diagnostics

 is detected by the test, go to Procedure 2. 

unction is embedded on system board. If LAN malfunctions, its connection is 

r LAN cable and system board may be f

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.