Chapter 2 Troubleshooting Procedures
Procedure 2 Replacement Check
If External microphone/Headphone does not work properly, perform check 1.
If internal microphone /Speaker do not work properly, perform check 2.
If HP out does not work properly, perform check 3.
If Volume control does not work properly, perform check 4.
Check 1 External microphone/Headphone may be faulty. Replace it with a new one following the steps in Chapter 4. If the problem still occurs, perform Check 5.
Check 2 Internal microphone /Speaker may be faulty. Replace it with a new one following the steps in Chapter 4. If the problem still occurs, perform Check 5.
Check 3 HP out may be faulty. Replace it with a new one following the steps in Chapter 4. If the problem still occurs, perform Check 5.
Check 4 Volume control may be faulty. Replace it with a new one following the steps in Chapter 4. If the problem still occurs, perform Check 6.
Check 5 Flat cables between AD board/Speaker and system board may be faulty. Replace it with new cable following the instructions in Chapter 4. If the problem still occurs, perform Check 6.
Check 6 Audio board/System board may be faulty. Replace it with a new one following the instructions in Chapter 4.
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