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2.5 USB 3.5” FDD Troubleshooting 2 Troubleshooting Procedures
PORTEGE A100 Maintenance Manual (960-460) 2-31
Procedure 3 Connector Check and Replacement Check
The USB FDD connector may be disconnected from the system board. Check visually that the
connector is connected firmly.
Check 1 Make sure the USB FDD cable is firmly connected to the PJ4700 or PJ4701 of the
system board.
USB FDD
System board
PJ4700 or PJ4701
If any of the connections are loose, reconnect firmly and repeat Procedure 2. If
there is still an error, go to Check 2.
Check 2 The USB FDD may be defective or damaged. Replace it with a new one. 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.