Toshiba Portege M100 Maintenance Manual - Page 101

2.15 Sound Troubleshooting 2 Troubleshooting Procedures Procedure 3 Replacement Check Check 1 If the stereo speakers do not sound properly, they may be defective or damaged. Replace them with new ones. If the stereo speakers still do not work properly, go to Check 5. Check 2 If headphones don't sound properly, the headphone jack may be defective or damaged. Replace the SD board with a new one. If the headphone still does not work properly, go to Check 5. Check 3 If the recording function does not work properly, the microphone cable may be defective or damaged. Replace it a new one. If the recording function still does not work properly, go to Check 4. Check 4 The SD board may be defective or damaged. Replace it with a new one. If there is still an error, go to Check 5. Check 5 The system board may be defective or damaged. Replace the system board with a new one following the instructions in Chapter 4, Replacement Procedures. PORTEGE M100 Maintenance Manual (960-452) 2-59