Toshiba Portege M100 Maintenance Manual - Page 73

2.5 FDD Troubleshooting 2 Troubleshooting Procedures Procedure 3 Connector Check and Replacement Check The 3.5inch FDD is connected to the System Board via USB port. Check 1 Make sure the USB cable is securely connected to the FDD. Also, check the cables between connector board, I/O board and system board. • Whether cables are disconnected • Whether connectors are squarely connected • Whether connectors are firmly connected • Whether connectors are defective If any of the connections are loose, reconnect firmly and repeat Procedure 2. If any connector is damaged, replace it with a ne w one and repeat Procedure 2. If there is still an error, go to Check 2. Check 2 The FDD cable may be defective or damaged. Replace it with a new one following the steps in Chapter 4, Replacement Procedures. If the FDD is still not functioning properly, perform Check 3. Check 3 Replace the System board with a new one following the steps in Chapter 4, Replacement Procedures. PORTEGE M100 Maintenance Manual (960-452) 2-31