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2 Troubleshooting Procedures 2.5 USB FDD Troubleshooting
2-40 [CONFIDENTIAL] TECRA S3 Maintenance Manual (960-532)
Procedure 3 Connector Check and Replacement Check
The USB FDD is connected to the US board or SR board via the USB port.
Check 1 Make sure the USB FDD cable is firmly connected to the connector
CN4620/CN4621 on the US board or CN4630 on the SR board. The USB FDD
can be connected to any of three USB ports. (Two ports are installed on the UA
board and one is on the USB board.)
If any of the connections are loose, reconnect firmly and repeat Procedure 2.
If any of the connections is damaged, or there is still an error, go to Check 2.
Check 2 Make sure the US cable is firmly connected to the connector CN4622 on the US
board and CN4610 on the system board.
If any of the connections are loose, reconnect firmly and repeat Procedure 2.
If any of the connections is damaged, or there is still an error, go to Check 3.
Check 3 Make sure the SR cable is firmly connected to the connector CN9510 on the SR
board and CN4611 or CN3421 on the system board.
If any of the connections are loose, reconnect firmly and repeat Procedure 2.
If any of the connections is damaged, or there is still an error, go to Check 4.
Check 4 The USB FDD or USB FDD cable may be defective or damaged. Replace it with
a new one. If the USB FDD is still not functioning properly, go to Check 5.
Check 5 Replace the System board with a new one following the steps in Chapter 4,
Replacement Procedures.