Toshiba R500 S5006X Maintenance Manual - Page 80
Troubleshooting Procedures, Replacement Procedures
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2 Troubleshooting Procedures 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 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. 2-34 [CONFIDENTIAL] PORTEGE R500 Maintenance Manual (960-634)