2TroubleshootingProcedures
QOSMIOF50-QOSMIOF55-DYNABOOKQOSMIOF50SeriesMaintenanceManual 
27

2.9 SpeakerTroubleshooting

S T A R T
D o a lls o u rc e s h av e
s a m e p ro b le m ?
E N D
P er fo rm e a rp h o n e te st
( P r o c e d u r e 2 )
D o e a r p h o n e s
fu n c tio n c o rre c tly ?
P e rfo rm co n n e c tio n c h e c k
( P r o c e d u r e 3 )
P e r fo r m r e p la c e m e n t
c h e c k
( P r o c e d u r e 4 )
P e rfo r m a u d io so u r ce te st
( P r o c e d u r e 1 )
Y e s
R e p l a c esy ste m b o a r d
S p e a k e r sa re no t
fa u lty .C o n tin u e
tro u b le s h o o t in g -
s e e  F i g u r e 2 - 1
N o
Figure2-8Speakertroubleshootingprocess