2.14 Sound Troubleshooting
2 Troubleshooting
2.14 Sound Troubleshooting
To check if the sound function is defective or malfunctioning, follow the troubleshooting
procedures below as instructed.
Procedure 1: Diagnostic Test Program Execution Check
Procedure 2: Connector Check
Procedure 3: Replacement Check
Procedure 1
Diagnostic Test Program Execution Check
Execute the Sound test program available as part of the maintenance test program. See
Chapter 3 for information on how to perform the test.
If any error is detected by the test, go to Procedure 2
Procedure 2
Connector Check
The speaker, internal microphones, external microphone and headphone are connected to the
System board shown in the following figure. These connections may be loose or cables may
come off. Disassemble the computer referring to the steps described in Chapter 4 and make
sure each connection. If there is still an error, perform Procedure 3.
Procedure 3
Replacement Check
Check 1
If the external speaker or headphone is not working properly, it may be faulty.
Replace it with a new one. If there is still an error, perform Check 2.
Check 2
If the speaker or internal microphones is not working properly, it may be faulty.
Replace it with a new one following the step in Chapter 4. If there is still an error,
go to Check 3.
Check 3
The System board may be faulty. Replace it with a new one following the step in
Chapter 4.
TECRA M4 Maintenance Manual (960-521)
[CONFIDENTIAL]
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Содержание Tecra M4
Страница 10: ...x CONFIDENTIAL TECRA M4 Maintenance Manual 960 521 ...
Страница 11: ... CONFIDENTIAL Chapter 1 Hardware Overview ...
Страница 12: ...1 Hardware Overview 1 ii CONFIDENTIAL TECRA M4 Maintenance Manual 960 521 1 Hardware Overview ...
Страница 51: ...1 Hardware Overview 1 8 AC Adapter 1 36 CONFIDENTIAL TECRA M4 Maintenance Manual 960 521 ...
Страница 52: ... CONFIDENTIAL Chapter 2 Troubleshooting ...
Страница 53: ...2 Troubleshooting 2 ii CONFIDENTIAL TECRA M4 Maintenance Manual 960 521 2 ...
Страница 57: ...2 Troubleshooting 2 vi CONFIDENTIAL TECRA M4 Maintenance Manual 960 521 ...
Страница 114: ... CONFIDENTIAL Chapter 3 Tests and Diagnostics ...
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Страница 223: ...3 Tests and Diagnostics 3 30 SETUP 3 104 CONFIDENTIAL TECRA M4 Maintenance Manual 960 521 ...
Страница 224: ... CONFIDENTIAL Chapter 4 Replacement Procedures ...
Страница 225: ...4 Replacement Procedures 4 ii CONFIDENTIAL TECRA M4 Maintenance Manual 960 521 4 ...
Страница 279: ...4 19 QI board CN board 4 Replacement Procedures TECRA M4 Maintenance Manual 960 521 CONFIDENTIAL 4 49 ...
Страница 300: ...4 Replacement Procedures 4 29 Digitizer 4 70 CONFIDENTIAL TECRA M4 Maintenance Manual 960 521 ...
Страница 320: ... CONFIDENTIAL Appendices ...
Страница 321: ...Appendices App ii CONFIDENTIAL TECRA M4 Maintenance Manual 960 521 ...
Страница 333: ...Appendices Appendix A Handling the LCD Module A 6 CONFIDENTIAL TECRA M4 Maintenance Manual 960 521 ...
Страница 341: ...Appendices Appendix B Board Layout B 8 CONFIDENTIAL TECRA M4 Maintenance Manual 960 521 ...
Страница 379: ...Appendices Appendix E Key Layout E 2 CONFIDENTIAL TECRA M4 Maintenance Manual 960 521 ...
Страница 383: ...Appendices Appendix G BIOS Rewrite Procedures G 2 CONFIDENTIAL TECRA M4 Maintenance Manual 960 521 ...
Страница 385: ...Appendices Appendix H EC KBC Rewrite Procedures H 2 CONFIDENTIAL TECRA M4 Maintenance Manual 960 521 ...
Страница 387: ...Appendices Appendix I Reliability I 2 CONFIDENTIAL TECRA M4 Maintenance Manual 960 521 ...