External Usb Devices Troubleshooting - Toshiba Satellite Maintenance Manual

2 Troubleshooting Procedures
Check 3 The system board may be damaged. Replace it with a new one following the
instructions in Chapter 4.
2.6

External USB Devices Troubleshooting

C h e c k U S B
p o r t
c o n n e c t i o n
Figure 2-5 External USB device troubleshooting process
Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual
S T A R T
P e r f o r m e x t e r n a l d e v i c e a n d
c o n n e c t i o n c h e c k
( P r o c e d u r e 1 )
D o e s t h e d e v i c e f u n c t i o n
Y e s
w h e n c o n n e c t e d
d i f f e r e n t U S B p o r t ?
N o
D o e s a n a l t e r n a t i v e U S B
d e v i c e f u n c t i o n c o r r e c t l y ?
N o
R e p l a c e s y s t e m b o a r d
( P r o c e d u r e 2 )
E N D
19
t o a
O r i g i n a l U S B
Y e s
d e v i c e i s f a u l t y