Toshiba Portege M100 Maintenance Manual - Page 100

2 Troubleshooting Procedures Procedure 2 Connector Check The sound function wiring diagram is shown below: 2.15 Sound Troubleshooting 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 PJ9512, PJ9511 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 S D board may be disconnected or damaged. Make sure connector PJ9530 on the SD board is firmly connected to PJ9510 on the system 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 or external Internal microphone cable may be disconnected. Make sure the microphone cable is firmly connected to PJ6000, PJ6001 on the SD board. If recording is still not functioning properly, go to Procedure 3. 2-58 PORTEGE M100 Maintenance Manual (960-452)