Toshiba Portege R500 Maintenance Manual - Page 100

2 Troubleshooting Procedures 2.13 Sound Troubleshooting As the connection may be defective, disassemble the computer and check each connection. If the problem still occurs, go to Procedure 3. Procedure 3 Replacement Check ‰ If headphone does not work properly, perform check 1. ‰ If external microphone does not work properly, perform check 2. ‰ If speaker does not work properly, perform check 3. ‰ If internal microphone does not work properly, perform check 4. Check 1 Headphone 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 2 External microphone 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 Speaker 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 4 Internal microphone 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 Jack board or FPC may be faulty. Replace it with a new one following the instructions in Chapter 4, Replacement Procedures. If the problem still occurs, perform Check 6 Check 6 System board may be faulty. Replace it with a new one following the instructions in Chapter 4, Replacement Procedures. 2-54 [CONFIDENTIAL] PORTEGE R500 Maintenance Manual (960-634)