Toshiba Satellite Pro L450-W1543 Maintenance Manual - Page 83

Procedure 1, LAN connection check, LAN port check, remains, go to Procedure 2.

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482 Troubleshooting Procedures To determine if the computer's built-in LAN is functioning properly, perform the following procedures. Figure 2-30 outlines the process. Start with Procedure 1 and continue as instructed. Procedure 1: LAN connection check Procedure 2: LAN port check Procedure 1 LAN connection check The LAN cable may be damaged or the connections may be loose. Perform Check 1: Check 1 Make sure LAN cable is firmly plugged into both the LAN set and the LAN port of the computer. If the cable is connected correctly, go to Check 2. Check 2 The LAN cable may be damaged. Replace with a good cable. If the malfunction remains, go to Procedure 2. Procedure 2 LAN port check The LAN set may be faulty. Perform Check 1: Check 1 Try connecting a different LAN port to the computer. If the replacement LAN works, the original set may be damaged. If the replacement set does not work, the system board may be damaged. Replace it with a new one following the instructions in Chapter 4. Satellite A350, SATEGO A350, EQUIUM A350 Series Maintenance Manual 48

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48
2 Troubleshooting Procedures
Satellite A350, SATEGO A350, EQUIUM A350 Series Maintenance Manual
48
To determine if the computer’s built-in LAN is functioning properly, perform the following
procedures. Figure 2-30 outlines the process. Start with Procedure 1 and continue as
instructed.
Procedure 1:
LAN connection check
Procedure 2:
LAN port check
Procedure 1
LAN connection check
The LAN cable may be damaged or the connections may be loose. Perform Check 1:
Check 1
Make sure LAN cable is firmly plugged into both the LAN set and the LAN port
of the computer. If the cable is connected correctly, go to Check 2.
Check 2
The LAN cable may be damaged. Replace with a good cable. If the malfunction
remains, go to Procedure 2.
Procedure 2
LAN port check
The LAN set may be faulty. Perform Check 1:
Check 1
Try connecting a different LAN port to the computer. If the replacement LAN
works, the original set may be damaged. If the replacement set does not work, the
system board may be damaged. Replace it with a new one following the
instructions in Chapter 4.