Toshiba TECRA A9 Series Maintenance Manual

2 Troubleshooting Procedures 2.14 Sound Troubleshooting
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 speakers do not work correctly, perform Check 1.
2. If the headphone does not work correctly, perform Check 2.
3. If the external microphones do not work correctly, perform Check 3.
4. If the Built in microphones do not work correctly, perform Check 4.
Check 1 If the 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.
Check 4 If the Built in microphone do not work properly, the Built in microphone cable
may be disconnected. Make sure the Built in microphone cable is firmly
connected to CN6050 on the system board. If the Built in microphone are still not
functioning properly, go to Procedure 3.
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Toshiba TECRA A9 Series Specifications

General

Processor	Intel Core 2 Duo
Display	15.4-inch
Display Resolution	1280 x 800 pixels
RAM	Up to 4 GB
Operating System	Windows Vista
Optical Drive	DVD-RW
Wireless	802.11a/g/n
Ports	USB 2.0, VGA, Ethernet, Headphone