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2 Troubleshooting Procedures
2-56 [CONFIDENTIAL] TECRA S3 Maintenance Manual (960-532)
Procedure 3 Replacement Check
Check 1 If the stereo speaker or internal microphone does not sound properly, the stereo
speaker or internal microphone may be defective or damaged. Replace it with a
new one. If the stereo speaker or internal microphone still does not work properly,
go to Check 3.
Check 2 If the external microphone or headphone does not sound properly, go to Check 3.
Check 3 The system board may be defective or damaged. Replace it with a new one
following the step in Chapter 4 Replacement Procedures.