2.12 LAN 2 Troubleshooting
TECRA S1 Maintenance Manual 2-31
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.