2 Troubleshooting Procedures
Satellite A660/A665 Series Maintenance Manual
26
To determine if the computer’s built-in speakers are functioning properly, perform the
following procedures. Figure 2-8 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.
Summary of Contents for Satellite P755 Series
Page 22: ...Chapter 2 Troubleshooting Procedures ...
Page 23: ......
Page 87: ...2Troubleshooting Procedures Satellite A660 A665 Series Maintenance Manual 64 ...
Page 99: ...Chapter 3 Tests and Diagnostics ...
Page 112: ...3 Tests and Diagnostics Satellite A660 A665 Series Maintenance Manual 13 ...
Page 136: ...3 Tests and Diagnostics Satellite A660 A665 Series Maintenance Manual 37 ...
Page 152: ...Chapter 4 Replacement Procedures ...
Page 159: ......