Lan Troubleshooting - Toshiba Satellite A10 Maintenance Manual

2.12 LAN Troubleshooting

2.12 LAN Troubleshooting
To check if the computer's LAN is defective or malfunctioning, follow the troubleshooting
procedures below as instructed.
Procedure 1
Execute the LAN Test in the Diagnostic Program. (Sound/LAN/Modem test Program subtest
03 LAN test) 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
Procedure 2
The LAN function is mounted on the system board. The modem/LAN jack is connected to the
system board by the cable. If the LAN malfunctions, the connection is bad or the system board
might be faulty.
Disassemble the computer following the steps described in Chapter 4 and perform the
following checks:
Check 1
Check 2
Check 3
Satellite A10/TECRA A1/Satellite Pro A10 Maintenance Manual (960-445)
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Procedure 1 Diagnostic Test Program Execution Check
Procedure 2 Connector Check and Replacement Check
Diagnostic Test Program Execution Check
Connector Check and Replacement Check
Check if the LAN jack is connected firmly to the connector PJ4100 on the system
board.
LAN Jack
If it is loose or disconnected, connect it firmly and return to Procedure 1. If there
is still an error, perform Check 2.
The LAN jack may be defective. Replace the LAN jack with a new one. If the
problem persist, perform Check 3.
The system board may be faulty. Disassemble the computer following the steps
described in Chapter 4.
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2 Troubleshooting Procedures
PJ4100 System Board
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