Toshiba TECRA 9100 Series Maintenance Manual page 103

2.15 Sound Troubleshooting
Procedure 2 Connector Check
The sound function wiring diagram is shown below:
Internal
PJ1003
Microphone
External
PJ1004
Microphone
Headphone
Any of the connections may be disconnected. Disassemble the computer following the steps
described in Chapter 4, Replacement Procedures and perform the following checks:
If the stereo speakers do not work correctly, perform Check 1.
If headphones do not work correctly, perform Check 2.
If sound recording does not work correctly, perform Check 3.
Check 1 If the stereo speakers do not work properly, the speaker cables may be
disconnected. Make sure the speaker cables are firmly connected to PJ127 on the
I/O board. If the stereo speakers are still not functioning properly, go to Procedure
3.
Check 2 If headphones do not work properly, the sound board may be disconnected or
damaged. Make sure connector PJ1000 and 1001 on the sound board is firmly
connected to the I/O board. If the sound function still does not work properly,
replace it with a new one. Go to Procedure 3.
Check 3 If the sound recording function does not work properly, the Internal microphone
cable may be disconnected. Make sure the microphone cable is firmly connected
to PJ1003 on the sound board. If recording is still not functioning properly, go to
Procedure 3.
TECRA 9100 Maintenance Manual (960-347)
PJ1000
Sound Board
PJ1005 PJ1001
2 Troubleshooting Procedures
PJ2 IS Board PJ1
PJ103 IC Board PJ2
Speaker
PJ102
I/O Board
PJ127
PJ103
PJ129
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