Toshiba Satellite Pro U300 Maintenance Manual - Page 79
Replacement Procedures, If it does not work properly when connected to CN12, CN19, CN20 or all ports
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2 Troubleshooting Procedures Check 2 USB FDD may be faulty. Replace it with a new one. If the problem still occurs, perform Check 3. Check 3 Connect USB FDD to each port embedded on system board. If it does not work properly when connected to CN12, CN19, CN20 or all ports, perform Check 4. Check 4 System board may be faulty. Replace it with a new one following the steps in Chapter 4, Replacement Procedures. Satellite U300 and Satellite Pro U300 Maintenance Manual (960-Q08) 27
2 Troubleshooting Procedures
Satellite U300 and Satellite Pro U300 Maintenance Manual (960-Q08)
27
Check 2
USB FDD may be faulty. Replace it with a new one. If the problem still occurs,
perform Check 3.
Check 3
Connect USB FDD to each port embedded on system board.
If it does not work properly when connected to CN12, CN19, CN20 or all ports,
perform Check 4.
Check 4
System board may be faulty. Replace it with a new one following the steps in
Chapter 4,
Replacement Procedures
.