Toshiba A40 manual Troubleshooting Procedures Sound Troubleshooting, Procedure 2 Connector Check

2 Troubleshooting Procedures 2.13 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:

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 PJ6001 and PJ6002 on the system board. If the stereo speakers are still not functioning properly, go to Procedure 3.

Check 2 If headphones do not work properly, the SD board may be disconnected or the headphone cable may be disconnected firmly. Make sure the SD board is firmly connected to PJ9550 on the system board and the headphone cable is connected to the headphone jack (PJ6000) on the SD 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 by an external microphone does not work properly, the SD board may be disconnected or the external microphone cable may be disconnected. Make sure the SD board is firmly connected to PJ9550 on the system board and the external microphone cable is firmly connected to microphone jack (PJ6003) on the SD board. If recording is still not functioning properly, go to Procedure 3.

2-58 Satellite A40 Maintenance Manual (960-458)