2.15 Sound Troubleshooting 2 Troubleshooting Procedures
QOSMIO G30 Maintenance Manual (960-546) [CONFIDENTIAL] 2-67
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, Replacement Procedures. If the problem still occurs, perform Check
7
Check 2 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 7.
Check 3 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
7.
Check 4 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 5 Speaker amp may be faulty. Replace it with a new one following the steps in
Chapter 4, Replacement Procedures. If the problem still occurs, perform Check 6.
Check 6 Speaker amp cable may be faulty. Replace it with a new one following the steps in
Chapter 4, Replacement Procedures. If the problem still occurs, perform Check 7.
Check 7 System board may be faulty. Replace it with a new one following the instructions
in Chapter 4, Replacement Procedures.