Toshiba S2 Benutzerhandbuch

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2  Troubleshooting Procedures  
2.9  TouchPad Troubleshooting 
2-26 
Tecra A3/S2 Series Maintenance Manual 
To determine if the computer’s built- in speakers are functioning properly, perform the following 
procedures. Figure 2-10 outlines the process. First adjust the speaker volume to an appropriate 
level. Start with Procedure 1 and continue as instructed. 
Procedure 1:  Audio source test 
Procedure 2:  Earphone test 
Procedure 3:  Connection check 
Procedure 4:  Replacement check 
Procedure 1 
Audio source test 
Try different audio sources (e.g. an audio CD and digital music file) to determine whether the 
fault is in the speaker system or not. If not all sources have sound problem, the problem is in the 
source devices. If all have the same problem, continue with Procedure 2. 
Procedure 2 
Earphone test 
Connect a set if earphones or external speakers. If these function correctly, go to Procedure 3. If 
they do not function correctly, the system board may be defective or damaged. Replace it with a 
new one. 
Procedure 3 
Connection check 
Disassemble the computer following the steps described in Chapter 4, Replacement Procedures 
and make sure the speaker cable is firmly connected to the audio board. If the stereo speakers are 
still not functioning properly, go to Procedure 4. 
Procedure 4 
Replacement check 
If the stereo speakers don't sound properly, the stereo speakers may be defective or damaged. 
Replace them with new ones. If the stereo speakers still do not work properly, try replacing in 
turn the audio board and system board.