Toshiba A20-S259 Maintenance Manual - Page 100
Troubleshooting Procedures, LAN Troubleshooting, Replacement Procedures, If the LAN
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2 Troubleshooting Procedures 2.11 LAN Troubleshooting Procedure 2 Connector Check and Replacement Check If the LAN port malfunctions, there may be a bad connection between the RJ-45 jack and the system board. Or the system board may be damaged. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures and perform the following checks: Check 1 Make sure the RJ-45 jack cable is firmly connected to PJ4100 on system board. If a connector is disconnected, connect it firmly and repeat Procedure 1. If the LAN port is still not functioning properly, perform Check 2. Check 2 The RJ-45 jack may be defective or damaged. Replace the RJ-45 jack with a new one following the steps in Chapter 4, Replacement Procedures. If the LAN port is still not functioning properly, perform Check 3. Check 3 The system board ma y be defective or damaged. Replace the system board with a new one following the steps in Chapter 4, Replacement Procedures. 2-50 Satellite A20 Maintenance Manual (960-444)