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2 Troubleshooting Procedures 2.5 USB FDD Troubleshooting
2-36 [CONFIDENTIAL] PORTEGE A600 Maintenance Manual (960-710)
Procedure 4 Replacement Check
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, perform the following.
If USB port 0 does not work properly, perform check 1.
If USB port 6 does not work properly, perform check 3.
If eSATA/USB port 4 does not work properly, perform check 5.
Check 1 USB board may be faulty. Replace it with a new one following the steps in
Chapter 4, Replacement Procedures. If the problem still occurs, perform Check 2.
Check 2 USB board FFC may be faulty. Replace it with a new one following the steps in
Chapter 4, Replacement Procedures. If the problem still occurs, perform Check 5.
Check 3 Jack board may be faulty. Replace it with a new one following the steps in
Chapter 4, Replacement Procedures. If the problem still occurs, perform Check 4.
Check 4 Jack board FFC may be faulty. Replace it with a new one following the steps in
Chapter 4, Replacement Procedures. If the problem still occurs, perform Check 5.
Check 5 System board may be faulty. Replace it with a new one following the instructions
in Chapter 4, Replacement Procedures.