2 Troubleshooting Procedures
Check 3 The system board may be damaged. Replace it with a new one following the instructions in Chapter 4.
2.6External USB Devices Troubleshooting
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 )
C h e c k U S B p o r t
c o n n e c t i o n
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| D o e s t h e d e v i c e f u n c t i o n |
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Y e s |
| w h e n c o n n e c t e d t o a |
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| D o e s a n a l t e r n a t i v e U S B |
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| d e v i c e f u n c t i o n c o r r e c t l y ? |
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| R e p l a c e s y s t e m b o a r d |
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| E N D |
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O r i g i n a l U S B d e v i c e i s f a u l t y
Figure 2-5 External USB device troubleshooting process
Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual
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