2.15 Sound Troubleshooting
Procedure 3
Replacement Check
•
If external microphone does not work properly, perform check 1.
•
If headphone does not work properly, perform check 2.
•
If internal microphone does not work properly, perform check 3.
•
If speaker does not work properly, perform check 4.
Check 1
External microphone 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
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 3
Internal microphone 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
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 5
System board may be faulty. Replace it with a new one following the instructions
in Chapter 4.
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2 Troubleshooting Procedures
PORTEGE M300 Maintenance Manual (960-504)