Toshiba Tecra A8 Maintenance Manual page 116

2 Troubleshooting Procedures
Procedure 2 Connector Check
The sound function-wiring diagram is shown below:
Any of the connections may be disconnected. Disassemble the computer following the steps
described in Chapter 4, Replacement Procedures and perform the following checks:
1. If the stereo speakers do not work correctly, perform Check 1.
2. If the headphone does not work correctly, perform Check 2.
3. If the microphones do not work correctly, perform Check 3.
Check 1 If the stereo speakers do not work properly, the speaker cable may be
disconnected. Make sure the speaker cable is firmly connected to CN6170 on the
system board. If the stereo speakers are still not functioning properly, go to
Procedure 3.
Check 2 If the headphone does not work properly, the headphone cable may be
disconnected. Make sure the headphone cable is firmly connected to J6310 on the
system board. If the sound function still does not work properly, Procedure 3.
Check 3 If the external microphones do not work properly, external microphone cable may
be disconnected. Make sure the external microphone cable is firmly connected to
J6051 on the system board.
If the external microphones are still not functioning properly, go to Procedure 3.
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2.14 Sound Troubleshooting