Toshiba TECRA S1 manual 10 LAN, LAN Troubleshooting, Procedure 1 Test Program Check

2.12 LAN 2 Troubleshooting

2.10 LAN

To check if the computer’s LAN is defective or malfunctioning, follow the troubleshooting procedures below as instructed.

Procedure 1 Test Program Check

Procedure 2 Connector Check and Replacement Check

Procedure 1 Test Program Check

Execute the LAN test program available as part of the maintenance test program. This program checks the LAN. Insert the Bootable CD into the CD-ROM. Turn on the computer and run the test. See Chapter 3 for information on how to perform the test.

If any error is detected by the test, go to Procedure 2

Procedure 2 Connector Check and Replacement Check

The LAN connector (RJ45) is mounted on the system board. If the LAN malfunctions, the system board or CPU might be faulty.

Disassemble the computer following the steps described in Chapter 4 and perform the following checks:

Check 1 The system board may be faulty. Replace it with a new one following the instructions in Chapter 4. If the LAN is still not functioning properly, perform Check 2.

Check 2 The memory may be defective. Replace the memory module with a new one following the steps described in Chapter 4. If the problem persist, perform

Check 3.

Check 3 The CPU may be faulty. Disassemble the computer following the steps described in Chapter 4 and replace the CPU with a new one.

TECRA S1 Maintenance Manual 2-31