2TroubleshootingProcedures
QOSMIOF50-QOSMIOF55-DYNABOOKQOSMIOF50SeriesMaintenanceManual
19
2.6ExternalUSBDevicesTroubleshooting
R e p la c e s y s te m b o a r d
( P r o c e d u r e 2 )
E N D
O r ig in a lU S B
d e v i c e is fa u l ty
P e r fo r m e x te r n a ld e v i c e a n d
c o n n e c tio n c h e c k
( P r o c e d u r e 1 )
S T A R T
D o e s th e d e v ic e f u n ctio n
w h e n c o n n e cte d to a
d iff e re n tU S B p o r t?
D o e s a n a lte rn a tiv e U S B
d e v ic efu n c tio n c o r re c tly ?
C h e c k U S B
p o rt
c o n n e c tio n
Figure2-5ExternalUSBdevicetroubleshootingprocess