Toshiba NB300 - Speaker Troubleshooting; Figure 2-7 Speaker Troubleshooting Process

2 Troubleshooting Procedures
NB300/305 Series Maintenance Manual 23
2.8 Speaker Troubleshooting
START
Do all sources have
same problem?
END
Perform earphone test
(Procedure 2)
Do earphones
function correctly?
Perform connection check
(Procedure 3)
Perform replacement
check
(Procedure 4)
Perform audio source test
(Procedure 1)
No
Yes
Yes
Replace system board
Speakers are not
faulty. Continue
troubleshooting -
see Figure 2-1
No
Figure 2-7 Speaker troubleshooting process