2 Troubleshooting Procedures
Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual
23
2.8 Speaker Troubleshooting
START
Do all sourc es ha ve
same pr oblem?
END
Perform earphone test
(Procedure 2)
Do earphones
function correctly?
Perform connection check
(Procedure 3)
Perform replaceme nt
check
(Procedure 4)
Perform audio source test
(Procedure 1)
Yes
Replace system board
Speakers are not
faulty. Continue
troubleshooting -
see Figure 2-1
No
Figure 2-7 Speaker troubleshooting process
To determine if the computer’s built-in speakers are functioning properly, perform the
following procedures. Figure 2-7 outlines the process. First adjust the speaker volume to an
appropriate level. Start with Procedure 1 and continue as instructed.