Toshiba Tecra A8 Maintenance Manual - Page 110
LAN Troubleshooting
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2 Troubleshooting Procedures 2.11 LAN Troubleshooting 2.11 LAN Troubleshooting This section describes how to determine if the computer's LAN is functioning properly. Perform the steps below starting with Procedure 1 and continue with the other procedures as required. Procedure 1: Diagnostic Test Program Execution Check Procedure 2: Connector Check and Replacement Check Procedure 1 Diagnostic Test Program Execution Check Execute the LAN test program available as part of the LAN/Modem/Bluetooth/IEEE1394 test program. 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 Connector Check and Replacement Check The RJ-45 jack with LAN cable is connected to the system board. If the LAN malfunctions, the system board might be damaged. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures and perform the following check: Check 1 Make sure the RJ-45 jack is firmly connected to CN4100 on the system board. If the connectors are disconnected, connect it firmly and repeat Procedure 1. If the LAN function is still not functioning properly, perform Check 2. Check 2 The system board may be defective or damaged. Replace it with a new one following the steps in Chapter 4, Replacement Procedures. 2-62 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)